British supermarket giant Tesco has slashed the cost of chart CDs to a record low in the UK. Tesco has been selling the top 40 CDs for £11.99 (US$17.10), but believes that lowering prices will increase sales. The chain hopes to become Britain's biggest music supplier. Best-selling albums will now cost just £8.50, up to 40% cheaper than the average £12.91 charged by traditional high street music stores.