Musician Al Kooper
, who worked with Dylan throughout his career and is probably best known for playing that killer, slightly-out-of-time organ in "Like a Rolling Stone
," loved "I Want You" and was desperate to record it. Dylan responded by refusing to record the song night after night.
Kooper had been instrumental in the making of Blonde on Blonde
. He'd hang with Dylan in the hotel room while Dylan came up with the songs and then rush to the studio to prep the rest of the band for recording. This way, when Dylan arrived, they'd be ready.
Dylan toyed with Kooper by slyly refusing to play "I Want You" until the very last day. Even then Dylan didn't volunteer to record it. To force Dylan's hand, Kooper taught the song to the band without asking permission first.