Original sentence: Aerosmith had signed a $30 million contract with Columbia Records/Sony Music in 1991, but had only recorded four of their six contractual albums with Geffen Records at that point (Done with Mirrors, Permanent Vacation, and Pump)
Edited sentence: Aerosmith had signed a $30 million contract with Columbia Records/Sony Music in 1991, but had only recorded three of their six contractual albums with Geffen Records at that point (Done with Mirrors, Permanent Vacation, and Pump)