sentence clarity!

(1) At least 15 different editions of the Bluesbreakers were in existence from January 1963 through mid-1970. And so it was under these rather loose terms that Clapton accepted Mayall's invite and stepped into the Bluesbreakers' lead guitar slot.
Should it be "invitation"? Please advise.



(2) As an up and coming player himself, Hendrix knew immediately after hearing Clapton that it was something he'd never heard before, both in content and in quality.

Should it be "upcoming player"?



(3) Bono and the boys seemed to reach deeper inside themselves with subsequent release, outdoing themselves in terms of quality and innovation. Albums like The Unforgettable Fire and The Joshua Tree Crowds responded and grew exponentially bigger until they were one of the world’s most popular acts.




(4) He is constantly enveloped in thought, attempting to resolve psychic problems, problems that once threatened to swallow him whole. Now he counts among those problems things like songwriting and other aspects of music that he considers challenges.




(5) Beyond the funk though the band, thanks to the input of Rubin, started serving up more introverted material like "Breaking the Girl" and "Under the Bridge." These more fragile tunes showcased a new dimension of the band, adding to its appeal and broadening their audience.



(6) He assembled various and sundry tracks he had laying around and packaged it as his 1997 solo outing, Smile From the Streets You Hold.

"various and sundry tracks" phrase not clear? Please rephrase.