Home Jambase Paul McCartney, The Roots & ‘Sing’ Cast Perform ‘Wonderful Christmastime’ On...National Music NewsJambaseMusicPaul McCartney, The Roots & ‘Sing’ Cast Perform ‘Wonderful Christmastime’ On ‘Tonight Show’December 21, 2016401FacebookTwitterPinterestWhatsApp Watch host Jimmy Fallon along with The Beatles legend performing his holiday classic.