Activision The Voice - Manual (Page 6)

QUICK PLAY
This mode is a straight forward singing mode where you can sing solo,
duet, compete head to head or in a sing-off in an attempt to achieve the
highest score possible.
SOLO - Sing to achieve the highest score. A results screen provides
performance statistics.
DUETS - Each player has their own pitch-board and lyric display (as
if they were playing head to head). A combined score and individual
scores are displayed at the end.
HEAD TO HEAD - Two players sing at the same time singing the
whole song together. At the end of a song, results and statistics are
displayed for each player and the winner is declared.
GAME MODES