“The bouncy delivery of the original does it for me,“ Nigerian singer Omah Lay says of his rendition of Pentatonix’s take on “Winter Wonderland / Don't Worry, Be Happy,” his submission to Carols Covered—Apple Music’s collection of Christmas standards updated by contemporary artists. “I love the bounce; it’s a little reggae-ish and that got me.” In terms of holiday classics, the singer adds that he wanted a song fans could enjoy whether it was the end of the year or not. “It's a song that has been inspirational for decades,” Lay says. “Regardless of season.”