Their 1992 third album "Bricks Are Heavy", produced by Butch Vig, was featured in "Rolling Stone" May 1999 list of 'Essential recordings of the 1990s', and was their most critically and commercially successful release. When Sparks reached out to Yoko Ono to request permission to sample her scream in the opening track "Wargasm," Ono reportedly replied that she had her fingers crossed for the group as it was time for their music to get popular. Their 1992 single "Pretend We're Dead" spent 13 weeks on the US Alternative Songs chart, reached a high of No. 8 and made No 21 on the UK Singles Chart. In their listing of the top 50 grunge songs, "Paste" magazine included "Pretend We're Dead" as number 21. L7 went on a year long tour to promote "Bricks Are Heavy." "Variety" reported in 1992 that L7 had built a huge underground following all over the world due to repeatedly touring. The popularity of "Bricks Are Heavy" was also boosted by frequent video play on MTV.