Complex sentence: After the MJQ disbanded temporarily in 1974, Lewis taught at the City College of New York and at Harvard University, while performing solo recitals and duo recitals with Hank Jones and others and continued composing.
Split into simpler sentences: After the MJQ disbanded temporarily in 1974, he held teaching positions at the City College of New York and at Harvard University. He also performed solo recitals and duo recitals with Hank Jones and others and continued composing.