How do I transpose the chords / audio?

Just click on the key you want to transpose the chords / audio to while browsing any song page:

*for audio: you may need to refresh the page and wait a few seconds (possibly longer) for the song to fully load before clicking on the key - otherwise, the song will not transpose.

If you see this under the transpose audio section instead of the regular keys:

This means that each number represents the level of semitones / half-steps up you are transposing the song.