Colour My World by James Pankow is a particularly popular piece of music for piano players and you can find a 2 page PDF for the piece right here.
This particularly sheet of music requires that the player use their right hand in order to read the notes below middle C, as well as their left hand to player the notes a couple of octaves below that.
This piece has been altered in order to make it more comfortable for beginners to play. According to the poster, beginners tend to be much more comfortable reading the written notes in staves, instead of in ledgers.
A performance of this piece can be viewed here:
This piece was altered by pianist Anne Ku, a professional who has performed around the world and currently resides in the USA.