Once upon a time, there was a recording of Tour-Carmen doing TWAI and the audio picked up the trumpet part so clearly the song could credibly be described as a "duet" the audio for the full show of that performance is also one of the best of Carmen's over all.
Please, for the love of all that is holy, KEEP THE CARMEN CLIPS COMING!!! I love her so much. Used to have so much and I lost a lot of stuff over the years. You are restoring my hope in the universe.