The 2012 debut EP from the five-member vocal ensemble Pentatonix, PTX, Vol. 1 features a cappella versions of contemporary pop hits. Included are the band's takes on Nicki Minaj's "Starships," Jazmine Sullivan's "Love You Long Time," Gotye's "Somebody That I Used to Know," and others. Also featured here are the two original songs, "The Baddest Girl" and "Show You How to Love." PTX, Vol. 1 is a great introduction to the Arlington, Texas-based group, which previously won season three of NBC's The Sing-Off vocal competition in 2011.