By 1970, Alan 'Mohawk' Hawkshaw had replaced Bruce Welch in the band and his honky-tonk piano and gurgling Hammond organ add a totally new dimension to their sound. Hank Marvin's sound is heavier than usual, whilst still retaining those 'singing strings' and trademark twang. The drums, courtesy of the incomparable Brian Bennett, are fluid, expressive, powerful and tight. The Prog-Jazz/Motown/Rock line-up is completed by John Rostill, and various other seasoned sessioners such as Herbie Flowers. Sadly, this experimental approach was not taken further and this collection of uniquely-arranged covers would be this line-up's only studio album. A pity, as Shades of Rock is as satisfying as it is underrated. The Informative booklet and inclusion of the funky Scotch on the Socks as a bonus track make this an essential purchase.