Pasacaglio or Passacaglio: How To spell?
The word Pasacaglio is misspelled against Passacaglio, a noun meaning "An old Italian or Spanish dance tune, in slow three-four measure, with divisions on a ground bass, resembling a chaconne."
Passacaglio has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings pa & acaglio which should not be misspelled with single 'S'
Wrong Spelling:  pa-s-acaglio  Correct Spelling:  pa-ss-acaglio 
Find more incorrect spellings of Passacaglio to spell right way.