Oh, and a quick heads up on why buying licensed digital sheet music rocks:ġ. So, after you've made it yours, don't forget to swing by the admin area if you're feeling like tweaking the key to your taste. Now, if you're thinking of getting your hands on the music, here's the deal: when you make that purchase, it's gonna land in your library in the original key. This cool feature lets you mess around with the song's key, shifting it up or down by about 3 semitones from its starting point. If it's lighting up in bright white, it's your cue to give it a click. Ever wondered if you can play 'Perry Mason Theme' by Fred Steiner in a different key? Here's the lowdown: Search for the little notes symbol chillin' at the bottom of the sheet music.