Is Kind of Blue the Best Jazz Album Ever

Yes, I would agree Folk Singer would be a bit of stretch to be included in jazz collection, but can it be blues jazz? We know Muddy had a big influence on many (blues) jazz musician later on. Same would be for Getz/Gilberto which is bossa nova jazz and not in mainstream Jazz.

For standard jazz, Bill Evans' Waltz for Debby would be just as good.

I have Folk Singer, Getz/Gilbero, and KOB in both LP and CD, and LP sounds more lively and full on my system.
Yes, I will check out James Ulmer. But I am not sure whether it would sound as good as Folk Singer (on LP). ;-)

Ulmer's nothing like Folk Singer. No Escape is revved-up blues. But I like. This coming from one with a LARGE collection of the old-time blues players.
The Blues Rider Trio Early Morning Blues is another more recent selection of blues I find worthy of occupying its place wedged between Little Walter and Howlin' Wolf. What the hey, give em a try out.

A great album but just too cool for me.I prefer something warmer and more organic.

NO. "Somethin Else" led by Cannonball Adderly, with Miles Davis, Hank Jones, Sam Jones, and Art Blakey; is the best Jazz album ever.

maybe grover washington jr's winelight,bob james BJ4,lonnie listen smith,larry carlton and the crusaders