# Mellotronics Streetlytron Pro — Maximum Mellotronics!

> Authentic virtual Mellotron with extensive tape library and MIDI control. (iPhone/iPad app by Phil Atkin.)

- Source: https://appshunter.io/ios/app/mellotronics-streetlytron-pro/id1447100877 (this page in markdown: same URL + `.md`)
- Developer: [Phil Atkin](https://appshunter.io/developer/1751268739)
- Category: Music
- Price: Free (on sale, was $14.99)
- Rating: 4.80/5 from 38 App Store ratings · 28 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.3 · 1.6 GB
- Languages: American English
- Released: 2019-02-14
- Data updated: 2026-09-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/mellotronics-streetlytron-pro/id1447100877/reviews.md

## What is Mellotronics Streetlytron Pro?

Mellotronics Streetlytron Pro : the most authentic Mellotronics experience for your iPhone and iPad. 

Brought to you in partnership with Streetly Electronics, the inventors of the mellotron, Streetlytron includes a massive collection of 90 tapes, with 65 drawn from Streetly's Production Masters - exactly the same tapes that ship with their $8,000 M4000 unit. Completing the sample sets are our own very popular 'Caitlin Downie Soprano' and 'Clare Lindley Violin' collection, to offer a huge, rich selection of choral and string textures for your mixes.

Playable with the on-screen 3 octave keyboard or by an attached MIDI controller, Streetlytron Pro exposes every internal control to MIDI, allowing performance and recording without ever needing to touch your device. A gorgeous, silky-smooth, ultra-musical reverb unit generates immense spaces, and 8 programmable preset slots set you up for one-touch performance. Totally playable and totally inspiring, for everything from classic psychedelic, vintage progressive, modern chamber pop or avant-garde dance sounds. 

Virtual MIDI, AudioBus and Inter-App Audio are supported.

No In-App Purchases, no hidden extra costs. Pay once, never pay again.

All voices are available in original form, straight from Streetly Electronics Production Tape library - unlooped 8 second samples, with a unique sample for every key of the 35 note range. To offer more performance flexibility the 'LOOP' button may be engaged, which process the samples to offer seamless looping. Some voices have decay tails - e.g pianos, harpsichord, staccato voices - and these are left unlooped. Streetlytron Pro Edition uses an advanced cubic spline interpolator, to delivery premium sonic quality when pitch bending or retuning. 

Streetlytron Pro voice list : 

Strings :
M300A Violins
M300B Violin 
MKII 3 Violins
Harry 3 Violins
String Section
Soft String Section
New String Section
Sad Strings 
Cello
Two Cellos Paravicini
Three Cellos Louise
Pizzi Cello
Orchestra
Watcher Mix

Vox Humana:
Eight Voice Choir 
Boys Choir
Female Choir
Male Choir
Russian Choir
Birotron Choir
Female Solo
Harry Male Solo

Brass :
MKII Brass
GC3 Brass
Miller Brass
2 Trombone 2 Trumpet
Trumpet
Trombone
Harry Open Trombone
Harry Muted Trombone
MKI French Horn

Woodwind / Reeds :
MKII Flute
MKI  Clarinet
Cor Anglais
Oboe
Bassoon
Tenor Sax
2 Alto 2 Tenor
Harry Alto Sax
Harry Bass Clarinet
Harry Four Saxes
Woodwind 

Keyboards :
MKII Piano
Harry Piano
Harpsichord 
Harry Accordion

Organs :
Church Organ
Wilden Organ
St Just in Roseland Gamba+Celeste
St Just in Roseland Gamba+Lieblich
St Just in Roseland Swell 8' + 4' + 2
St Just in Roseland Swell Reeds
St Just in Roseland Great 8' + 4' + 2
St Just in Roseland Great Organ (no Brass)
St Just in Roseland Full Organ

Mallets :
Celeste
Vibes
Harry Vibes
Harry Marimba

Plucked strings / Guitars :
MKII Elec Gtr
Hawaiian Guitar
MKII Mandolin
Harry Mandolin

Caitlin Downie Soprano Voice :
Mmm soft
Aah soft
Aah Mezzo
Aah Forte
Eee Mezzo
Eee Forte
Ooh Mezzo
Ooh Forteh
Staccato Aah
Staccato Eee
Staccato Ooh
Ensemble Soft
Ensemble Mezzo
Ensemble Forte
Ensemble Staccato

Clare Lindley Violin Collection :
Bow Soft
Bow Soft Vibrato
Bow No Vibrato
Bow Vibrato
Bow Tremolo
Bow Ensemble Soft
Bow Ensemble
Bow Ensemble Vibrato
Spiccato
Pizzicato

Bonus : 
Rhodes
Harp Arpeggios

## Key features

- 90 authentic Mellotron tape sounds
- Streetly Electronics Production Masters
- On-screen 3-octave keyboard
- MIDI controller support
- Ultra-musical reverb unit
- 8 programmable preset slots
- Virtual MIDI, AudioBus, IAA support

## Recent user reviews (10 of 28)

All indexed reviews: https://appshunter.io/ios/app/mellotronics-streetlytron-pro/id1447100877/reviews.md

### 5/5 — Wow factor 10

*2025-11-01, version 1.51*

This is really amazing.  These sound better than the mellotron patches in my Korg Kronos 3, they are authentic and beautiful in that special mellotron way  This is one of the best music apps in my huge collection, it’s phenomenal

### 5/5 — Wow! I would pay for this app gladly, can’t believe it seems to be free

*2025-10-25, version 1.51*

What a great sounding, well featured app with full instructions and information, i was so impressed I got his other music apps too, this guy put a lot of effort and detail into this and it sounds great, I urge people to get this while they can, fantastic, well done Mr Phil Atkin, I can’t wait to try those organs, too, never played one, but I want to now 😊 thank you so much 🙏

### 5/5 — One of my favorite instruments

*2025-02-07, version 1.51*

This is a lovely app with the perfect sound. The functionality is mostly good and even seems to perform beyond its stated capabilities. 

The only thing is I want to trigger presets from another app. Tried to set up note on/offs on channel 10 as required. The problem is, my Streetlytron is set to Omni so when I hit those triggers in my other app (Loopy Pro) it plays notes instead of triggering the preset change. I need my Streetlytron in Omni for other reasons. Would be great if the preset selector could be set to MIDI cc’s like everything else. 

Perhaps it’s time for an update folks. Otherwise, this instrument is beautiful.

### 5/5 — THANK YOU!111

*2024-09-07, version 1.51*

OMG. KEEP THIS APP ALIVE! FANTASTIC .I HAVE BEEN SEARCHING FOR THESE STRINGS AND KEYS 4 A LONG TIME. 
THE SOUNDS OF MY SOUL!

Please stay I. Touch. Thanks so much for this. A+++

### 5/5 — Beautiful sound, intuitive user interface, and good fun

*2023-05-13, version 1.51*

Music fills my life and makes me full. As someone who has plinked haphazardly at length on the family piano he grew up with, fixed cheesy discarded electronic keyboards for his kids, and regularly toys with the idea of learning to actually play, this app fills much of the musical-keyboard longing I feel. Very satisfying. Now I can play the ‘Close Encounters’ chord progression in the style of a Russian Choir from my iPhone secreted beneath the conference table during boring meeting, hook a 100W amp up to my midi keyboard via the Mac and wake my teenage sons with a church organ music, or just lay in a hammock in the back yard on a fine spring day trying to figure out the keyboard parts to In-A-Gatta-Da-Vita on my iPad. Deep and rich experience.  Thanks for making it possible!

### 5/5 — My go-to

*2023-03-29, version 1.51*

I love this—it is my go-to for B-3, horns and string sounds!

### 5/5 — The real deal

*2022-11-22, version 1.51*

Love this app. It includes way more sounds than expensive computer apps such as MuTron Pro (although MuTron Pro has deeper features and efx, they charge a lot extra to add additional  sounds). I control the instrument with a midi keyboard and output the sounds to my computer interface using the iPad headphone jack with stereo 1/4” male to female cables. A steal at five times the price!

### 4/5 — Prog..

*2022-11-21, version 1.51*

Very nice app… just needs to be AUv3..

### 5/5 — Spot on Watcher of the Skies

*2022-05-29, version 1.51*

Someday, I’ll learn all the wonderful aspects of this app and all the sounds the Mellotron can make. 

But for now, I play all all the Watcher chords and my heart is so incredibly happy!  Thank you so much for your great work. Much appreciated!

### 5/5 — Unexpected

*2021-07-08, version 1.51*

Well, I saw this being tested with good old Mr Woods (Sound Test Room) and thought I’d give it a risk on buying it.  

It certainly wasn’t a mistake buying it.  I’m very impressed with the sounds and ‘how’ they sound.  Looks like it doesn’t get updated at though, so hopefully any IOS updates won’t break it.

## Frequently asked questions about Mellotronics Streetlytron Pro

### What is Mellotronics Streetlytron Pro?

Mellotronics Streetlytron Pro is a virtual instrument app that provides the most authentic Mellotron experience on iPhone and iPad. It features a massive collection of 90 tapes, including original Streetly Electronics Production Masters, offering a wide range of choral and string textures.

### What are the key features of this app?

Key features include 90 authentic Mellotron tape sounds, playable via an on-screen keyboard or MIDI controller, an integrated reverb unit, 8 programmable preset slots, and support for Virtual MIDI, AudioBus, and Inter-App Audio. It also offers unlooped 8-second samples with an optional looping function.

### How much does Mellotronics Streetlytron Pro cost?

This app is a paid application with no in-app purchases or hidden extra costs. You pay once and have full access to all features and content.

### What devices is Mellotronics Streetlytron Pro compatible with?

The app is designed for iPhone and iPad, offering an authentic Mellotron experience on Apple mobile devices. It supports integration with other music apps through AudioBus and Inter-App Audio.

### What kind of music can I create with this app?

The app is versatile and inspiring for creating a wide range of sounds, including classic psychedelic, vintage progressive, modern chamber pop, and avant-garde dance music. Its extensive tape library provides rich choral and string textures suitable for many genres.

## Version history (last 5 releases)

### 1.51 — 2019-09-23

Fix for a nasty bug that resulted in audio distortion on certain devices at 48kHz.

### 1.5 — 2019-09-20

Various tape clean-ups. OMNI mode fixed, sustain pedal bug fixed.

### 1.4 — 2019-02-20

One minor update. Two settings have been added to give you absolute control over 48kHz / 44.1kHz operation. If you have a new 48kHz device and the pitch of the audio is consistently off you can override our algorithm and force an internal synthesis rate of 48kHz. Do this in Settings by setting both 'Force Synthesis Rate' to ON and setting 'Synthesize 48kHz' to ON. Synthesis can be similarly forced to 44.1kHz by by setting 'Force Synthesis Rate' to ON and setting 'Synthesize 48kHz' to OFF. If Force Synthesis Rate is off our internal algorthm will run to try to determine what frequency is best for your hardware and environment.

### 1.3 — 2019-02-16

Two new voices have been added into the "Bonus" category - Rhodes Piano, and the lush Harp Arpeggios. 

A couple of minor issues have been dealt with - The 'Harry Piano' and 'Harry Open Trombone' have been replaced with much cleaner samples to eliminate some unpleasant crackling, and a handful of the voices have been retuned to be more true to concert pitch. Obviously, these are historic mellotron tapes - some notes will always be 'interesting'. And that's why we love them. Enjoy, and make EXCELLENT music!!

### 1.0 — 2019-02-13

No release notes.

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## More apps by Phil Atkin

- [Mellotronics Streetlytron '63](https://appshunter.io/ios/app/mellotronics-streetlytron-63/id1394220877)
- [St Just in Roseland Organ](https://appshunter.io/ios/app/st-just-in-roseland-organ/id1394221644)
- [Sopranotron 2](https://appshunter.io/ios/app/sopranotron-2/id1447101182)
- [Pipe Organ](https://appshunter.io/ios/app/pipe-organ/id1485889911)
- [Player Organ](https://appshunter.io/ios/app/player-organ/id1503483457)

All apps by Phil Atkin: https://appshunter.io/developer/1751268739

## Related topics

[mellotronics streetlytron pro](https://appshunter.io/ios/topics/mellotronics-streetlytron-pro) · [mellotron](https://appshunter.io/ios/topics/mellotron) · [mellotronics streetlytron '63](https://appshunter.io/ios/topics/mellotronics-streetlytron-63)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*
