Happy Holidays / The Holiday Season

Vocals: Darren Criss - Drums: Gary Novak - Bass: Craig Nelson - Guitar: Tom Rizzo - Piano: Pat Coil - Trumpet: Steve Patrick - Saxophones: Mark Douthit - Trombone: Barry Green - Vibraphone: Ron Fair - Glockenspiel: Ron Fair - Celesta: Ron Fair - Recording Arranger: Gordon Goodwin - Vocal Arranger: Ron Fair - Vocal Arranger: Darren Criss - Recording Engineer: Ron Fair - Additional Engineer: Pat Thrall - Mixer: Bill Schnee - Mastering Engineer: Ted Jensen - Producer: Ron Fair - Producer: Darren Criss - Concertina: Alan Umstead - Violin: Catherine Umstead - Violin: Mary Vanosdale - Violin: Erin Hall - Violin: Maria Conti - Violin: Jung-Min Shin - Violin: Bruce Wethey - Violin: Gerald Greer - Viola: Elizabeth Lamb - Viola: Anthony Parce - Cello: Kevin Bate - Trumpet: Jeff Bailey - Composer/Author: Irving Berlin - Composer: Kay Thompson