What did Nirvana do differently with "In Utero" that caused a documentary to be made about recording the album?
Nirvana – A Classic Album Under Review – In Utero:  The film purports to offer a "rare insight" into the influential music group, and consists of live and studio performances by Nirvana, interspersed with interviews with the band and with music industry notables and experts. In Utero (album):  To capture a more abrasive and natural sound, the group hired engineer Steve Albini to record "In Utero" during a two-week period in February 1993 at Pachyderm Studio in Cannon Falls, Minnesota.
i don't know