Franz Jarnach (* 14th October,1943 in Bad Godesberg; † 16th January, 2017 in Hamburg) was a german musician and actor. Though his father was a german music professor, he preferred rock ’n’ roll. Under his pseudonyms "Mr. Piggi" and "Schildkröte" ("Turtle") he played piano and keyboards in Hamburgian rock 'n' roll bands like Tony Sheridan, Lee Curtis, and the Rattles. In recent years he jammed together with Ralf "Franny" Hartmann
(Franny And The Fireballs
) in the Schildkröten-or Turtle-Duo or Kravag-Allstars
. They presented rock 'n' roll, blues,and ballads in a classic boogie-woogie (or sometimes called "piggy-gigantic") style.