When I was growing up in the 70s, Charo was everywhere. She was on Chico and the Man, Hollywood Squares, Love Boat, Fantasy Island and on and on.
I only knew her as that flaky lady with the weird clothes and weirder accent. Turns out she’s an incredible flamenco guitarist! Who knew? Everybody but me. Hey, to be fair, I was born in 1969.
I knew about Charro. I was watching the musical Reefer Madness on TV and I found out that Veronica Mars can really fucking sing. It’s common knowledge now but, boy, was I surprised back then.
Hence her role in Frozen. In the same vein, I was watching old Muppet Show episodes and (re-)discovered that Lynda Carter had a proper set of pipes too.
That Neil Patrick Harris can do magic tricks is broadly known, but apparently he’s a competent acrobat as well.
Simon Helberg is an excellent pianist and genuinely played as part of his role as accompanist Cosmo McMoon in Florence Foster Jenkins.
Bruce Dickinson, lead singer for Iron Maiden, was also a competitive, national level fencer, and is a qualified Boeing 757 and 747 pilot. I also believe that he is also a qualified 777 pilot as well.
I once saw an episode of Quantum Leap in which Sam jumped into the life of Broadway musical singer doing* Man of La Mancha*. Scott Bakula, who played Sam, is, as I learned, a fine singer who did all the musical numbers for his character. I like hearing him belt out his introductory number, the title song Man of La Mancha.
It was a voice role and so presumably did not require any dancing, but he did sing even later than that as Lumière in Disney’s 1991 Beauty and the Beast.