This is a pretty well studied and researched area. It is in the research almost universally accepted that silence or white-noise is the most conducive environmental soundscape for introspective thought across all groups.
People go to therapy, group therapy, read, etc in order to have thoughts of others that seem rather important to introspective thought to me. I don't think all audio media and forms of listening would fit, but I don't think all wouldn't fit as those important inputs.