While the CSIs are passing out gifts, the song Sam Baker (Pat Monahan) sings is "Calling All Angels" by Train.
When Danny Messer (Carmine Giovinazzo) and Stella Bonasera (Melina Kanakaredes) are going to arrest Sam Baker (Pat Monahan) they discover him in a studio recording Train's "Hey Soul Sister". Monahan is the lead singer of Train. The other two musicians, Jimmy Stafford ("Guitarist") and Scott Underwood ("Drummer"), are also members of Train.