Ten fantastic and varied Christmas songs to really enjoy. And identify

1 pt for the title (come on, they are easy) and 2 pts for the performers

Class performances from Jona Lewie, Girls Aloud, Pentatonix, Tom Odell, Justin Bieber/Mariah Carey, The Pretenders, Michael Bublé, OneRepublic, Britney Spears, The Pogues (ft Kirsty MacColl)