Gustav Leonhardt ( 30 May 1928 , in 's - Graveland - 16 January 2012 , in Amsterdam ) was a renowned Dutch keyboard player , conductor , musicologist , teacher and editor .
Gustav Leonhardt ( born 's - Graveland , Netherlands , 30 May 1928 , died Amsterdam , 16 January 2012 ) was a famous Dutch harpsichordist , organist and conductor who became well known for playing music from historical periods on period instruments .