In this week's episode Mark & Barney welcome special guest Caroline Sullivan and hear all about her journey from New Jersey to the republic of Brightonia, discussing in the process her poptastic pieces about Girls Aloud, Adele and Courtney Love's optioning of her classic Bay City Rollers book.Jasper then rejoins the band as Caroline, citing "artistic differences", splits the crazy scene and heads back to Brighton. Talk turns to the week's other free pieces, which mark the 40th anniversary of postpunk legends the Pop Group's incendiary debut album Y.The week's new audio offering is John Tobler's 1977 interview with the great Bonnie Raitt, 70 years young next week. After hearing a clip in which Bonnie talks about how she got into blues, Mark, Barney & Jasper pay tribute to her voice, her slide-guitar playing, and her soulful interpretations of songs by Eric Kaz, Jackson Browne & friends.New library highlights considered by your hosts include Disc's Caroline Boucher chatting with Marc Bolan in 1972, Trouser Press' Jim Green tagging along with Elvis Costello in Belfast, The Wire's David Stubbs going into Battles and Lisa Verrico seeing M.I.A. in live action in 2007.Caroline Sullivan's Bay City Rollers book is available on Amazon; follow her on Twitter @TheCSullivan.Enter the giveaway at rocksbackpages.com/giveaway for a chance to win an RBP subscription or book.Produced by Jasper Murison-BowiePieces discussed: Courtney Love, Girls Aloud, Adele, The Pop Group, The Popper Group, The Poppest Group, Bonnie Raitt audio, Dusty Springfield, Marc Bolan, Linda Ronstadt, Elvis Costello, Durutti Column, British synth-pop, Snoop Doggy Dogg, Battles, M.I.A. and Dagmar Krause.