Here's an updated list to 5pm. One song I could not ID the artist.
4:48am ET Trans-Siberian Orchestra "Christmas Eve/Sarajevo 12/24"
4:58am ET Vince Guaraldi Trio "Linus and Lucy"
5:08am ET David Arkenstone "Joy to the World"
5:18am ET David Arkenstone "I Saw Three Ships"
5:28am ET Trans-Siberian Orchestra "Boughs of Holly"
5:58am ET John Williams - Main Title from Home Alone ("Somewhere in My Memory") (Vocals)
6:08am ET Ryan Farish "We Three Kings"
6:18am ET U2 "Christmas (Baby Please Come Home)" (Vocals)
8:59am ET Ryan Farish "Carol of The Bells"
9:38am ET Neil Cross "Morning Joy"
11:18am ET Trans-Siberian Orchestra "Wizards In Winter"
11:28am ET Vince Guaraldi Trio "Skating"
11:38am ET Vince Guaraldi Trio "Christmas Is Coming"
11:48am ET Unknown artist "God Rest Ye Merry, Gentlemen"
4:08pm ET The Song Factory and Bill McDermott -- "Joy to the World"
4:18pm ET Death Cab for Cutie ""Christmas (Baby Please Come Home)" (Vocals)
7:18pm ET John Williams "Holiday Flight"
7:28pm ET David Arkenstone "Overture"
7:38pm ET Trans Siberian Orchestra "A Mad Russian's Christmas"
7:58pm ET David Arkenstone "Hark! The Herald Angels Sing"