Product Group: Guitar teaching (pop). Contributor: Weedon, Bert. Bert Weedon's 'Play In A Day' remains one of the world's most successful guitar tutors. It is as much a legend as the stars that have learnt from it including Eric Clapton, Mike Oldfield, Paul McCartney, George Harrison, John Lennon, Sting, Brian May, Pete Townshend and many, many others! 'Play in a Day' is easy to use, with plenty of tips for selecting the right guitar, the correct amplifier, how to hold your instrument and plenty of tunes and exercises to get to grips with.