Frankie Park: Bing Banged My Lula [2000] paperback

Standing by the school gates there are only two kinds of people: the smug marrieds and the single mums. You're either with Charlie and her mates, Conka, Sharon and Tasha, or you're against her, happy in your domesticity and financial security. As an escape from the constant demands of more money, kids and ex-husbands, Charlie and Conka decide to form a band. But their plans to secure a record deal the size of Kansas are thwarted by a series of life-changing events which include a miscarriage, a spot of head-butting and an outbreak of unexpected passion '