Solfegio or Solfeggio: How To spell?
The word Solfegio is misspelled against Solfeggio, a noun meaning "The system of arranging the scale by the names do, re, mi, fa, sol, la, si, by which singing is taught; a singing exercise upon these syllables."
Solfeggio has double "gg" is mispronounced as "g"Remember double 'GG' in between the strings solfe & io which should not be misspelled with single 'G'
Wrong Spelling:  solfe-g-io  Correct Spelling:  solfe-gg-io 
Find more incorrect spellings of Solfeggio to spell right way.