It's very consumer unfriendly to put things like transposing a song behind a pay wall - These are community uploads, and transposing is an extremely simple thing to do (Computer Science wise). Sure, offer things like a metronome, auto-scroll, lessons, etc. behind your paywall but access to community uploads and a simple tool like transposing a song should not be put under a pay wall. What's next? Send us to look for finger positions online as well?