This is from a live performance by the Bicentennial Band. Brian was the official soloist for that band, and this is one of the few recorded performances I have seen (the only one that comes to mind right now). It's also a good chance to hear Brian on his old Besson!

The full concert is on YouTube, but I snipped out this segment and enhanced the video to make it easier to see on Brian's solo:

https://youtu.be/I20vPazje8E