Soundtrack to the summer

The biggest single in the UK for months has sparked fresh debate over the merits of digital music made on computers over humans in the recording studio using analogue instruments. Daft Punk's "Get Lucky" is the first single this year to hit a million sales. From the album "Random Access Memories" it's the soundtrack to the summer for many. For BH, music journalist Simon Reynolds reviews the album to explore whether popular music's going back to the future.