Complex sentence: The two did shook hands, marking their first-ever handshake and also had their first face-to-face duet, both of them singing Richards' own single from his second album entitled "Wish I May".
Split into simpler sentences: The two did shook hands, marking their first-ever handshake. They also had their first face-to-face duet afterwards, both of them singing Richards' own single (from his second album) entitled "Wish I May".