Zoom MS 70 CDR, EHX 720, Ambient Toy Piano Jam

My wife gave me a toy piano for Christmas. The kind with cute animals on. My second thought was that it must be possible to create some kind of listenworthy music with this. This track on Bandcamp: The piano sound is samplebased, with three different samples spaced over a two octave keyboard. For some reason, the sample is looped for the last half of the sound duration, and the loop length is slightly off, so the second half of the sound is