Simply say "JARVIS" followed by
any of the following commands

Search for (song name)
Play (song name)
Pause/unpause
Set volume to (0-100) percent
Max volume
Mute/unmute
Skip (number) seconds
Skip to the end
Rewind (number) seconds
Go back to the beginning

J.A.R.V.I.S.

A Voice Activated Soundcloud Player

Show related results when asked to play a song: