No glitch....just a finger sliding on strings...something we have seldom heard on a Streisand recording. On american club jazz recordings of the golden era you can hear the following: Fingers on strings, brushes on drums, glasses tinkling, people coughing and, of course, extraordinary music.

I would call this a jazz recording but it is really a Streisand recording in the jazz cabaret idiom. She always makes it something you have never heard before, and never will hear again. They broke the mold.

It's a very typical sound when a guitar is involved. Just because I love guitar sound, it doesn't hurt my ear at all
As someone wrote before, it's a kind quite unusual "noise" for a Barbra's album and I like this imperfection!