I wrote this song as an “etude” (study) for piano some years ago and I spent some time improving and finalizing it in 2016. It is mostly played with only one hand at a time, but it actually could be played with just one finger for most of the song since it only has one note sounding at a time until towards the end - but play it as written. There are a number of “study objectives” listed on the sheet music, including some related to making the "one note" carry and sound interesting.
A low-resolution version of the sheet music may be downloaded below. A piano book containing this song is not yet available.