Those of us who continue to mourn the passing of John Peel (as the Radio 1 disc jockey John Ravenscroft used to style himself) can take solace in the career of his BBC Radio 6 Music-presenting son, Tom. Although operating in a much-changed professional environment, Ravenscroft junior still occasionally wanders through territory once occupied by his father, and his foray into the world of 1970s and 1980s do-it-yourself recording (26 September), would almost certainly have got the paternal seal of approval. Installed in a rain-drenched mobile home named “Gypsy Danger”, the better to recreate the ambience of the era, Ravenscroft set off in search of a pre-digital age in which artists to whom no record company would give a home had little choice but to pay a pressing plant to do t