Pentatonix is the eponymous fourth studio album by American a cappella group Pentatonix, to be released on October 16, 2015. The release date was announced on Twitter by a series of pictures featuring the five band members released over a five day-span, with one band member added to the picture each day, culminating in the date being revealed on August 28.It is the band's seventh release. The first release of the band to feature only original material (except bonus tracks in its Deluxe versions), Pentatonix also marks the first time band members receive individual songwriting credits for each tracks.