"PTX, Vols. 1 & 2" refers to the debut and second studio albums by the a cappella group Pentatonix, released in 2014 and 2015, respectively. 1. **PTX, Vol. 1**: Released in 2014, this album includes a collection of original songs and covers of popular tracks. It showcases the group’s vocal harmonies and arrangements, highlighting their unique style.
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