For this release of QUADROPHENIA, the Criterion Collection worked with Bob Pridden, the Who’s sound engineer for over thirty years, to create a new 5.1 surround mix of the band’s music in the film. The songs were meticulously restored and in some cases reconstructed from scratch from the original source recordings; the final mix was approved by the Who’s Pete Townshend. Presented here is a brief interview with Pridden and a restoration demonstration comparing the previous home video soundtrack and picture with those of this release.