Pop jazz for the prog rock fan

before jazz rock appeared as the main term for jazz fused with rock, a lot of rock with jazz-based solos was labelled in the UK music press as rock-jazz (beit for a short period). Amongst those listed included BST, Chicago, Timebox and even Colosseum. Indeed listen to a major developmental period for rock in 1970, and there was a lot of examples of bands experimenting with allsorts of music before settling on what they became familiar for. For instance Patto's first two album had Ollie Hassall playing jazz solo breaks - especially when playing the vibes; the second (the Irish originals) Skid Row album  34 hours had some jazz guitar solos by Gary Moore and that other Irish spin-off out of Taste, Stud, had a couple of jazz-based instumentals tucked away amongst the straighter rock of their eponymous album.

It is very significant for me to hear everyone's opinion. Thank you.

Anyway, I often listened and was researching pop jazz. Steely Dan that Alex referred might be a good example. For Aja especially

Or, I did not put it on the list though I thought about "Seven Days" of Sting. I expected the vote to gather in Chicago a little of course.

Postscript

I will check it at once. I felt it very wonderful.