HTC One User Manual page 145

When you're listening to music and the screen display turns off,
press POWER to turn the screen back on and control the music
playback directly on the Lock screen.
Press and drag your finger across the
progress bar to jump to any part of the
song.
Turn shuffle on or off. (Shuffle is off
when button is gray.)
Cycle through the repeat modes:
repeat all songs, repeat current song,
and don't repeat.
Open the full screen player (Music
Channel) to view lyrics and music
visualization while the song is being
played.
(You can set whether the full screen
player starts automatically or not in
Music settings.)
Minimize the Now playing screen to
continue browsing your music
collection.
Entertainment 145