What group is a five member Acappella group from Arlington, TX  that headlined the On My Way Home Tour?
Pentatonix: Pentatonix (abbreviated PTX) is a five-member American a cappella group from Arlington, Texas, consisting of vocalists Scott Hoying, Mitch Grassi, Kirstin Maldonado, Avi Kaplan, and Kevin Olusola.
i don't know