They were the greatest early rock and roll band you never heard of.
The Tielman Brothers were of Indonesian/Dutch ancestry and made a name for themselves, first in East Indonesia, and later in the Netherlands. In 1958 they recorded Rock Little Baby of Mine, considered to be the first Dutch rock 'n' roll record

Undercover S.K.A., a third-wave band from San Francisco, began as a one-off gig for a backyard party in the 1990s. They lost band leader Bob Glynn in 2017.

Pure awesome.
Kitty, Daisy and Lewis Durham "giving a free gig at Brewdog Shorditch; to win tickets you had to draw a picture of one of their songs," 11 April 2012. Those are their parents filling in on bass and rhythm guitar. [Previously posted vids and info here.]