for iOS 9.1 software

Play or pause music: Say “play music.” To pause, say “pause,”
“pause music,” or “stop.” You can also say “next song” or “previous
song.”
Play an album, artist, or playlist: Say “play album,” “play artist,” or
“play playlist” followed by the name of the artist, album, or playlist
you wish to play.
Find out more about the current song: Say “what’s playing,” “who
sings this song,” or “who is this song by.”
Use Siri. Press and hold the Home button. In addition to the commands
available through Voice Control, Siri supports the following:
Play an album, artist, song, playlist, or Radio station: Say “play”
followed by the name of the artist, album, song, playlist, or station
that you want to play. If Siri doesn’t find what you asked for, be
more specific. For example, say “play the radio station ‘Pure Pop’”
rather than saying “play ‘Pure Pop.’”
Play music in random order: Say “shuffle play” followed by the
name of the artist or album you’d like to play in random order.
Play similar music: While music is playing, say “play more songs
like this one” or “create a radio station based on this song.”
Browse Apple Music: You can play any Apple Music track by title
(“play ‘Happy’ by Pharrell Williams”), by artist (“play Echosmith”),
by chart (“play the top song from March 1981”), and change
versions (“play the live version of it”).