Artist: Bing Crosby - Producer: Nick Patrick - Vocals: Bing Crosby - Artist: Pentatonix - Vocals: Pentatonix - Mix Engineer: Ed Boyer - Guitar: John Parricelli - Drums: Neal Wilkinson - Conductor: Nick Ingman - Celesta: Rob Mounsey - Piano: Rob Mounsey - Bass (Vocal): Steve Pearce - Orchestra: The London Symphony Orchestra - Vocal Arranger: Fiz Shapur - Engineer: Simon Hanhart - Mastering Engineer: Tim Debney - Engineer: Matt Bartrum - Artist: The London Symphony Orchestra - String Arranger: Rob Mounsey