Great performance by Johnny Winter from the DVD 'Live from the 70's'“Key To The Highway” is one of those many blues songs with murky origins and controversy about who exactly penned the lyrics. Though the song is associated with Big Bill Broonzy, it was first recorded by piano player Charlie Segar – who was known as the “Key Board Wizard Supreme” – in February 1940. A few months later, Broonzy played guitar on a version by Jazz Gillum before recording his own version in 1941 (with Gillum returni