My brother dips a toe back into rock music

He gave up rock in the early '70's and eventually became an opera fanatic. About a month ago (now age 58)he asked me -out of the blue (pun intended) - about Joni Mitchell and Buffalo Springfield. Yesterday he asked an interesting question:

Recommend 5 albums by people he hasn't heard of.

Bearing in mind that

A)Anyone who isn't either a household name from the sixties or famous at the Michael Jackson/Madonna level qualifies as "not heard of"

B)The Joni/Buffalo Springield starting point and "art song" inclination likely to appeal to an opera guy

and

C)The desire to sprinkle a little bit of the rock reductionist esthetic

Who would you point him to?

I gave him 4 on the spot, but I'll share those later if the interest in this thread warrants.

Marty