LATEST: Babyshambles frontman Pete Doherty has failed to honour his promise to buy a guitar from a music store where he played an impromptu gig earlier this month (Mar08). The 29-year-old treated shoppers to a performance in a Reading, England music store, but his music-making was cut short after he accidentally broke a string on his guitar. And despite the mishap, it seemed Doherty was impressed with the goods on offer at the Music Man shop - even asking owner Peter Sirrell to leave aside a $300 (GBP150) guitar which he would return to pay for. But the singer has failed to honour his potential purchase, and hasn't been seen in the store since the mini-gig. Sirrell says, "I'm not surprised he didn't come back - he didn't seem too with it (in a fit mental state)."