Act Three was the third album to be released by X Factor runners-up G4. The album included a duet with Stephen Gately on the song "No Matter What", Gately having sung the lead on the original version of the song with his band Boyzone. This was the third album of rock, pop and traditional classics sung in operatic pop style by the group. Being released in the same week as the third album by the similar band Il Divo, Act Three peaked at #21 in the UK charts with first week sales of 37,487. Act Three was also the last album with Matthew Stiff singing bass.