So long, Chad Stuart of "Chad and Jeremy"

British singer Chad Stuart of the duo, Chad and Jeremy, died Sunday at age 79, Billboard reports.

With Jeremy Clyde, Stuart charted several 1960s hits, including "Yesterday's Gone," "Summer Song" and "Willow Weep for Me." I strongly recommend the pair's underrated LPs Before and After and Of Cabbages and Kings, which saw them flirt nicely with psychedelia.

The pair appeared memorably on "The Dick Van Dyke Show" and on on "Batman" in plot where Catwoman steals their voices. Holy laryngitis! What a criminal calamity that was!

Here they are singing their song "A Teenage Failure" from their 1966 appearance on the show: