.. 
.. I remember his summer replacement variety show.
He had a segment where he would ask the studio audience to toss out a topic and he’d write a song about it on the spot.
The audience came up with weird stuff like “Zippers on Bananas” and “I Got My Toe Stuck in a Faucet”. And yet Mac never failed to come up with a song. It was amazing.
Back then the Ovation acoustic was pretty cool. I remember seeing him use it on TV shows. RIP, guy.