Complex sentence: Charles Magnante started his professional career playing in Italian restaurants and on the Staten Island Ferry, however, he wanted break free from the O Sole Mio image of the stereotypical Italian-American accordionist which his audiences expected to hear.
Split into simpler sentences: Charles Magnante started his professional career playing in Italian restaurants and on the Staten Island Ferry. However, he wanted to break free from the O Sole Mio image of the stereotypical Italian-American accordionist which his audiences expected to hear.