Jack Lance on Twitter: "Interestingly, exactly five of {"do", "re", "mi", "fa", "sol", "la", "ti"} appear in the full names of the singers in Pentatonix." / Twitter

Interestingly, exactly five of {"do", "re", "mi", "fa", "sol", "la", "ti"} appear in the full names of the singers in Pentatonix.