Such a good entry! I couldn't stop playing. I had a hard time figuring out what to do in the last room so it took me some extra time before I could finish.
I stored each note as a sound with names 1, 2, 3... And then I wrote the sequence in a table of indices that was used to lookup the next tone to play. Initially I though about using the speed factor in the sound component, but the theme only consists of 8 different notes.
I really liked this one. Took me some time to figure out what to do, but it helped to watch the Youtube video and then re-reading the guide. Good music and snappy feel/sounds too!