Touch and hold any song in the Music library to access its context menu which can include:
Play, Add to playlist, Delete, Share, Set as ringtone, and Search.
Tap the Options icon in the Music library to access its Options menu which can include: Select to play, Add to playlist, Delete, Share, and Settings.
Tap the Options icon in the Music player to access its Options menu which can include: Search, Add to playlist, Delete, Share, Set as ringtone, Music video, and Details.