Joan May sends in this excerpt from the Robin Trower cover story, April 1975 Circus Raves Magazine, by Deborah Frost Levine:
It's discussing Robin Trower's upcoming third solo album, For Earth Below
"Matthew Fisher is again at the dials, imprisoning Trower's explosive guitar work on tape. It is always remarkable that the former Procol organist manages to capture the feeling and essence of Trower's sound so exquisitely, when his own orientation is quite different.
'He's got a great pair of ears,' explained Robin, who has nothing but praise for his ex-Procol mate. As to whether Fisher would change musical horses, he said, 'I think he's probably being influenced in his own music by what I do. I'd like to see him have a go that way. But it may take some times till he gets it together!'
Whatever the case, Fisher has helped the guitar player create a natural sound, as devastating as the effect produced by his live concerts."
Matthew Fisher's BtP page