That is Mike Johnson on vocals.
Here are the peel session details according to this site: http://homepage.ntlworld.com/jmsmall/peel/bands/d.html
Dinosaur Jr 1st
Recorded 8/11/88
First broadcast 14/11/88
Patrick Murphy: drums
Lou Barlow: bass
J. Mascis: guitar
Produced and engineered by Mike Robinson
Raisans
Does it float
Leper
Bulbs of passion
Dinosaur Jr 2nd
Recorded 25/4/89 at Wessex Studios, London
First broadcast 22/5/89
Patrick Murphy: drums
Lou Barlow: bass
J. Mascis: guitar
Produced by Dale Griffin
Engineer: Dave Dade
Budge
No Bones
Chunks
Dinosaur Jr 3rd (acoustic session)
First broadcast 9/1/93 (rptd 17/4/93)
Noon at dawn
Get Me
Keeblin’
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