Niko Del Rey Live Appearance From Hawai'i. It's A Hawaii Thing Podcast. Niko Del Rey is the beatboxer for the #capella group, The Filharmonics. An LA-based group of Filipino-American youngsters who were featured in NBC’S hit musical competition, The Sing-Off, has much to sing about. The 5-piece vocal group made the semi-finals, joined The Sing-Off national tour, and were featured in the Universal Pictures hit movie, #PitchPerfect 2, setting off a viral sensation after their Late Late Show appearance.