I think this is another case--there are periodic outbreaks on this thread and others--of one person fearfully projecting their own limited tastes onto the rest of the surround-buying public. For fans of soul and R&B, especially, Roberta Flack and Donny Hathaway are musical giants--class acts and truly consequential figures in the history of American pop music. In the realm of 70s soft rock, the peers of Seals & Crofts would form a very small club (using either popularity or musicianship or both as your membership criteria), and Summer Breeze is their breakthrough album. And Hot Tuna may not be my bag, either, but any project featuring two founding members of Jefferson Airplane plus legendary violinist Papa John Creach is bound to get gobbled up by the Airplane-Starship heads. Plenty of appeal to go around there, and the caliber of the music is plenty high, too.