Question: What musical style is performed by the professional group 'Straight No Chaser' who gained recognition when a video of theirs, 'The 12 days of Christmas' went viral and who subsequently landed a five-album deal before changing their name to Another Round?
Sentence (from "Straight No Chaser (group)"): In 2007, a 1998 video of "The 12 Days of Christmas", went viral with over 8 million views and subsequently led to a five-album record deal with Atlantic Records in 2008.
Relevant evidence: Yes