Decades after his death, Wes Montgomery’s keen ears and boundless imagination still bowl over jazz aficionados and newbies alike.If jazz seems too impenetrable and intimidating to get into, dig this. Wes Montgomery, arguably its greatest guitarist, couldn’t read music, didn’t know theory, and didn’t understand his instrument’s electronics. He also strummed exclusively with his thumb, an idiosyncrasy that would make any music instructor run faint. But with the possible exception of Jim Hall, any jazz guitarist with an iota of self-awareness genuflects to him as the greatest to ever do it. Decades after his death, his keen ears and boundless...