MIDITrail vs Roll Player Piano

MIDITrail is a MIDI player which provides 3D visualization of MIDI data sets. You can enjoy not only listening but also viewing. MIDITrail supports Standard MIDI File (format 0/1), CoreMIDI, and multiple MIDI ports. MIDITrail is available for Windows, macOS and iOS. Optional feature: You can enjoy the VR(virtual reality) experience using cheap VR glasses for smartphones and the game controller for iPhone. Requirements: iOS 12.0 or later (1) Preparing MIDI files You have to transfer MIDI files to your iOS device from Mac or PC. Connect your iOS device to Mac or PC, and launch iTunes. Then you can transfer MIDI files using 'File Sharing'. Or you can add MIDI files to MIDITrail using Files App of iOS. (2) Preparing Sound module You can use sound module which supports Core MIDI. And you can use internal wavetable synthesizer. There are three ways as shown below: The first way is to use the internal wavetable synthesizer. You have to transfer the wavetable file (DLS/SF2) to your iOS device in advance. The second way is to use Synth App which supports 'Virtual MIDI Port' and 'Background Mode'. (e.g., KQ Sampei, bs-16i, Sound Canvas for iOS) The third way is to connect MIDI interface device and external sound module. (e.g., CME U2MIDI Pro)

Features -Rotating finger gestures on the screen to play music. -The music can be played according to the conducting motion of the index finger captured by the front camera*. -The music can be played accordance to the movement of the rotating circle captured by the rear camera*. -The tempo of the performance can be controlled by the speed of rotation. -The volume of the performance can be controlled by the size of the rotation radius. -You can also play at the volume according to the score. -You can record your performance. -57 different sound sources can be switched. -The equalizer allows independent adjustment of the volume of the low, mid, and high frequencies. -MIDI files can be imported**. -You can enjoy automatic performance. -You can bring multiple iPhones to enjoy ensemble playing. -You can practice ensembles with just one iPhone. -You can play hand-cranked music by reading roll sheet socre with the camera*. -You can play hand-cranked music by reading the rotating circle with the camera*. -You can print roll music score for hand-cranked music box (40mm/70mm width) as PDF file*. -You can print music score for disc-type hand-cranked music boxes as a PDF file*. * In-app purchase ($0.99) will add more functions.  ** In-app purchase ($3.99) will add more functions.