are still kid-friendly and mostly forgettable". Spin reviewer Mikael Wood wrote that the album "dials down the sparkle [of Good Morning Revival], which is kind of a bummer". Us Weekly Ian Drew called it "their most diverse foray into pop-rock so far", with "both downright danceable fun" and "light nostalgia". Nicholas Coren of Virgin Music said the band "restore the sound that their fans grew to love when they started, resulting with a fusion of tracks that sound like they're from the era" of their first two albums. Commercial performance and legacyCardiology debuted at number 31 on the Billboard 200 and appeared on five additional Billboard charts; it peaked at number six on the Alternative Albums chart, number seven on the Top Rock Albums chart, number 13 on the Digital Albums chart, number 24 on the Internet Albums chart, and number 28 on the Top Current Albums chart. As of September 2011, the album has sold over 52,000 copies in the U.S. and charted at number three in Australia, number 18 in New Zealand, number 24 in Switzerland, number 29 in Austria, number 46 in Germany, number 63 in the UK, and number 67 in France. It was later certified gold in Australia. "Like It's Her Birthday" charted in the U.S. at number 13 on the Rock Digital Song Sales chart, number 14 on the Bubbling Under Hot 100 chart, number 33 on the Mainstream Top 40 chart, and number 36 on the Dance Club Songs chart. "Counting the Days" charted at number 26 on the Rock Digital Song Sales chart. In Australia, "Like It's Her Birthday" charted at number seven, "Sex on the Radio" charted at number 26, and "Last Night" charted at number 27. All three songs were certified platinum in Australia. In 2016, Benji Madden said of Cardiology''; "It was really important, more emotionally than anything else at that time. That record was more for me and the band than it was for anybody else." Track listing Writing credits per booklet. Personnel Personnel per booklet.Good Charlotte Joel Madden – vocals Benji Madden – guitars, vocals Billy Martin – guitars, keyboards Paul Thomas – bass Dean Butterworth – drumsAdditional musicians Bart Hendrickson – keyboards, programming BC Smith – keyboards, programmingProduction Don Gilmore – producer, mixing Mark Kiczula – recording Mike Cashin – assistant Josh Bowman – assistant Serban Ghenea – additional mixing (track 5); mixing (tracks 6 and