Watch the unforgettable Nirvana and Post Malone performance at the SNL 50th anniversary concert in Radio City Music Hall.

Nirvana reunited on stage with Post Malone for a performance at SNL50: The Homecoming Concert on Valentine's Day - marking Dave Grohl's second time on stage since his cheating scandal.

NBC's celebration of its long-running sketch show brought back iconic musical guests and past cast members for an unforgettable night.

A look at Sonic Youth breaking into the mainstream with thei 1990 album 'Goo', where they got the name from and why it chimes with the records themes.

Here's some of the most talked-about performances that did not go on as planned: The Irish singer was booed -- and ...