I agree with LE too. Mark keeps playing "in comfort zone", and yes the redbud tree solo has nothing special IMHO, compraed to many other clean strat solos in his carreer.
About overdubs/natural results, I think that it is more complex :
Mark and Tony Joe White played together in the same room in 2007 for "one bad thought". Does it sound more "spontaneous" or "fresh" than other collaborations ?
What is the more spontaneous recording :
- a band playing together in the same room, BUT recording the 20th take, after several days rehearsing the tune ?
OR
- a musician playing alone along a backing track, but recording the FIRST take, just jamming and improvising ?
there are many examples of bands recording albums playing together in the same room, and you immediately think of "spontaneity" "freshness" "natural result", but you don't know how many takes they did before the one you hear on the final mix
on the other hand, I remember Jimmy Page explaining that he recorded his overdubbed solo for "since I've been loving you" (one of the best in rock history IMHO) in ONE take, in the corridor of the studio because the mainroom was not available. That's what I call "spontaneity", but it's an overdubb though....