In August 2001, Fallon Bowman left Kittie. Bowman explained why she left the band, saying: "I was unhappy with some things in the band so I felt that maybe it was time for me to depart. I think it was for the best". On October 30, 2001, Kittie released their second album "Oracle". Sounding more aggressive than "Spit", the album features elements of death metal and thrash metal. Morgan Lander noted how the band members were only 14 years old when writing their debut album and said "We haven't written in 4 or 5 years." She acknowledged a change in influence from their early days, stating, "Then we listened to bands like Nirvana, Silverchair, and Alice in Chains. Now we listen to stuff like Cannibal Corpse and Nile." However, the band would continue to write in the same fashion by first composing the music and then using that "as the backdrop behind the vocals." The album "Oracle" was recorded with Morgan Lander as the sole guitarist. Fallon's position as guitarist was filled by Jeff Phillips who worked as Kittie's guitar technician. In 2002, Talena Atfield left the band and was replaced on bass by Jennifer Arroyo. In 2004, the group added guitarist Lisa Marx, and Jeff Phillips went to work full-time on his side project, Thine Eyes Bleed. On July 27, 2004, Kittie released their third studio album "Until the End".