T. Rex near the end... -- Joan totally takes over... -- Birthday for the last surviving member of this Seventies super-group...

Marc Bolan, BBC radio studio, Sept. 1972. (Evening Standard/Getty Images)

3/20/1977 (40 years ago today) - T. Rex played what was to be their last live concert gig at The Locarno in Portsmouth, England. A sad ending for a revered and influential British rocker: just four years earlier, Marc Bolan's popularity in England matched that of The Beatles (and he was breezily outselling Jimi Hendrix and The Who), but then came the downfall and a string of unsuccessful somewhat experimental LP's. Now, though, in the spring of '77, T. Rex began the comeback: his just-released "Dandy In The Underworld" was met with critical acclaim and the current tour was getting positive reviews. In September, the car Bolan's girlfriend was driving crashed into a tree; she was severely injured, but Marc was killed in the accident, two weeks before his 30th birthday.

3/20/1982 (35 years ago today) - Joan Jett & The Blackhearts start a seven week run at No. 1 with "I Love Rock And Roll" -- The track was her defining moment and big-time breakthrough and (no shame here whatsoever) showcased Joan's quite underrated talent for taking material and making it sound like hers and hers alone (it's what real rock fans do): the single was originally done by U.K. outfit The Arrows back in 1975...

3/20/1951 - Happy Birthday to master percussionist Carl Palmer, 66 years old today -- Played with Atomic Rooster and The Crazy World Of Arthur Brown before forming one of the 1970's most insanely successful bands with Keith Emerson and Greg Lake; still, it must be strange and heart-breaking to be the lone member left from one of rock's all-time legendary outfits...

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"The beat was goin' strong/Playin' my favorite song...", xoxo!