Jimmy Fallon March 22, 2018 9:05 am ‘Tonight': Panic! At The Disco Sings ‘DuckTales' Theme Song “Tonight Show” host Jimmy Fallon welcomes Panic! At The Disco’s Brendon Urie to sing the “DuckTales” theme song. Local 0:44 At least 5 shot along Connecticut Avenue in Dupont Circle 1:36 O.J. Simpson's cause of death revealed 2:36 Super dad makes Mario-themed obstacle course for son's birthday 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business'