 Among the group's prominent guest musicians are Dave Koz, who collaborated with them in jazz covers of "Careless Whisper" and the "Game of Thrones" theme music, and Niia, who joined them for a "space jazz" version of "The End of the World".Postmodern Jukebox's October 2013 collaboration with Puddles Pity Party on a cover of Lorde's "Royals" generated particularly strong interest; as of June 2020, this video remained among the five most popular on Bradlee's YouTube channel with over 28.6 million hits.In 2013, Bradlee found interest from the video game industry, gaining a composer credit for 2K Games' "BioShock Infinite" soundtrack, which features four of his stylized arrangements