ePipes Drones vs skippodisk

ePipes Drones is a tunable, authentic sounding set of Scottish Highland, Border Pipes, and Smallpipes drones. This app is for musicians who are learning to play the Scottish bagpipes and want high-quality sets of tunable drones to play along with on their practice chanters. The sounds are provided by ePipes.co.uk in Glasgow, Scotland, from extremely high-fidelity studio recordings of three very fine instruments. Touch the ePipes logo to switch the drones on and off. Select the drone type using the drone selector. Available drone types are Great Highland, Border, and Smallpipes. Set the volume using the Drone Volume slider. The pitch may be transposed in semitone increments +/- one octave in using the Tranpose slider. Additionally, the Tuning slider may be used to fine-tune the drone +/- 50 cents in one-cent increments The Reverb slider sets how much reverb effect is added to the sound. All settings are saved when the app exits and restored the next time it is run. MIDI Chanter Test Features: Test your MIDI Chanter by setting the MIDI channels for the chanter and drones channels. Any MIDI Note-On message note numbers received on those channels will be displayed at the bottom of the screen. This value can be used to determine the MIDI offset value from 67 for the chanter in my other MIDI-enabled apps that default to the Fagerstrom Technopipes standard of the bottom note being MIDI note 67 (G3) as a zero offset.

skippodisk is a free AUv3 plugin and standalone app. It features algorithm that imitates compact disc reading errors and adds feedback for some comb filtering. controls: * main control is a 2-dimensional slider that changes delay time / buffer size using value on X axis and feedback (positive and negative, -0.997 to 0.997) on Y axis. This control adds some creative comb-like effect. * algorithm settings: 
[ auto ] enables automatic cd skipping. 
[ dropout ] enables adding silence. Use both [auto] and [dropout] with zero feedback value (in the centre of touch control) to achieve the effect of a CD audio glitch * [ bypass ] control and volume control. This slider is in low value state by default.