At this point in his career, Peter Frampton could have tossed out a second instrumental album and won another Grammy. Thankfully, this time out, he played his heart in addition to his axe, creating what could be the best album of his career.
Slash's first solo album shows continuity and expert songwriting despite all of the musical influences involved. But despite its being a solid release, the old school rock 'n' roll can sometimes get a little too reliable.
Diamond gave away little about his attitude towards the singers and since we didn't see him actually giving any tips or suggesting arrangements, changing keys, or doing much of anything, I assume he wasn't a very active mentor.