Monoleap is a new musical instrument for the iPad capable of playing any software or hardware synth / sampler with rich expression.
With Monoleap, you can play any melody in a four octave range, while controlling your instrument expression intuitively with your hand movements. The sensitive reaction to hand movement allows you control the nuances of your performance, in a way that is very difficult to achieve using a keyboard.
Please note that as with any other instrument, specifically pattern based instruments, it takes time and practice to master the fingering patterns.
Monoleap featured on Jamie Mallender's YouTube channel