Interesting responses. Music seems to be a frequent theme.

I sometimes get stuck on a musical phrase, usually not so much a song but a single phrase, backup lick, or short chord sequence. Ear worms usually end up bothering me. When that happens I make myself hum another chord phrase that I remember from some song long ago, one that I've found drives out the unwanted visitor but doesn't stick.

I often carry on an imagined conversation with my twin brother and usually about some technical detail of bikes. His interests run in, shall we say, a different direction from mine and whenever we talk on the phone or in person he likes to discuss details for which I have minimal interest. I listen to be polite. When I try to discuss something else, like bikes, his attention wanes and the conversation ends or reverts back to the original topic. But explaining something to someone else helps be clarify my own thoughts. So the imaginary listener might as well be him.

On today's tandem ride I found that yes I can certainly reach my aerobic limit. 48.7 miles. Didn't quite make 50.