kazoo + jazz = no fun

I have just bought the THELONIOUS MONK QUARTET with JOHN COLTRANE at Carnegie Hall CD reissue on Blue Note Records and the kazoo-like humming, omnipresent on the last tracks, irritates me terribly. I have absolutely no clue where this disturbing background drone comes from. I first thought I had bought a defect copy but when I listen very closely, I realise it comes from one of the musicians. I tried to find info on the internet because no review mentions the annoying humming but the only relating thing I found was a sentence in a review of an old Art Tatum CD : "...and Slam Stewart turns in some of his patented bowed bass work with accompanying humming, creating the illusion of a low-pitched kazoo". Is Ahmed Abdul-Malik spoiling the fun?