THE YARDBIRDS - 'Heart Full Of Soul'/'Steeled Blues' (Columbia DB 7594) June 1965
Another example proving that The Yardbirds were somewhat ahead of their time was their next single release, the Graham Gouldman penned classic 'Heart Full Of Soul' in June 1965. It's one of the earliest examples of Eastern music being mixed with the rock format.
The Yardbirds recorded a version of this using a sitar but the results were deemed not good enough for commercial release. Instead, Jeff Beck used a fuzz box with his guitar to recreate the exotic sounds. It still sounds psychedelic to me though.
The flip 'Steeled Blues' is a blues instro by Jeff Beck with Keith Relf's harmonica bursts.