Pentatonix (abbreviated PTX) is an American a cappella group (means they don’t use any instruments) from Texas. They sing covers of modern pop songs sometimes as medleys (when you sing lots of different songs together) as well as some og their own original songs.They make all of the sounds you can hear so there are lots of vocal harmonies, basslines, body percussion sections, and beatboxing.
Pentatonix, is named after the pentatonic scale (a scale with 5 notes) to represent the five members of the group.They replaced the last letter with an "x" to make it more appealing.
White winter hymnal https://www.youtube.com/watch?v=o10drRI3VQ0
Winter wonderland/don’t worry be happy