videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including REM - Peter Buck & Marimba (?) - London - 1998, REM - Get Up Acoustic @ Milan, Italy - 22 March 1991, REM - Pop Song 87 (1987)