Wes was one of the most compositional players of all time. His solos never sounded like a bunch of notes thrown together just to fit the changes. That is why he is generally considered to be unequaled in many ways. The bass player, Rick Laird was the bassist that later played electric bass in John Mclaughlin's Mahivishnu Orchestra.
Wes Montgomery sound is so mellow because he played directly with his thumb: He learned that way because when he was very young his neighbour was mad about the guitar noise all day, and Wes discovered that playing with his thumb and not with the pick the sound was softer. God bless that neighbour and Wes.
He actually fluffs a note at 5:35 and then smiles a little at his goof like, hey, nobody's perfect. Even the greats miss one once in a while. They're human.
I'm just amazed, first of all, that you can get a high quality video and audio of this stuff 55 years after the performance, on demand. Second of all, that you can get it for free. Wow.
Wes was my safe place in Viet Nam, when I needed quiet and peace I would put on one of his records and the ugly would be gone for awhile. Thank you Mr. Montgomery