Are there any steel-2-brass sound clips avail?

[tokuno]

I searched TubeNet and went googling for audio head-to-head mouthpiece comparisons and found none.

Has anyone found (or uploaded) soundclips of someone playing the same phrases on the same horn while swapping brass vs steel mouthpiece, apropos articulation, flexibility, timbre, etc.,?

I understand that "my mileage may vary", but I'd be interested to hear the difference (if any), even if the results are specific to only that player.

Anyone know of a link?