This is the first of a two-parter on Lonnie, looking at his acoustic period – before electrics were invented! His early main guitar was a Martin slot-headed 000 model with a 12-fret neck. Stay tuned ...

Guitar lessons: The most common chord progression is known as a ‘12-bar blues’, which, predictably is 12 bars long (eight-, 16- and 24-bar versions are common, too). What the name doesn’t tell you is ...