During the time of the live recording titled "Sour Girl (Live Acoustic)," Stone Temple Pilots had released their album "No. 4" in 1999. This album featured a mix of grunge and alternative rock sounds, showcasing the band's evolving musical style. The acoustic performance of "Sour Girl" emphasizes the introspective and lyrical depth characteristic of the band's work, particularly highlighting Scott Weiland's vocal prowess. Notably, the recording serves as a poignant tribute to Weiland, who passed away in 2015, underscoring the impact he had on the band's identity and legacy. This performance reflects not only the band's artistic journey but also a moment of reverence for Weiland's contributions to rock music.