Frank Zappa About His Own Solo Playing

...just talk on your instrument..

More like a voice, which is how you think about your own solo playing.

FZ: Yeah, I think that's the most direct way to communicate with somebody, using speech rhythms. That really makes a big difference. Because, if you listen to a guy playing nice neat scale patterns and things like that, no matter how skillful he is in making his stuff land on the beat, you always hear it as Music – capital "M" music – lines, chord changes, and stuff like that. Real studied. But if you want to get beyond music into emotional content, you have to break through that and just talk on your instrument, just make it talk. And if you're gonna make it talk, you have to be aware that there's a different rhythmic attitude you have to adopt in order to do that.

Here is an Interview where Frank talks about his solos....