The DC4 seems to have a "wider" sound profile whereas I would describe the 4AL as more "compact". It almost sounds like the recording equipment changes with each mouthpiece, so interesting. Do you change the gap at all between MP?
I love the way you articulate those three Fs halfway through the Holst - a lot of players just gloss over them, almost not articulating them at all, forgetting (or not knowing) the origin of the music.
Adams E3 0.6 with SS Bell
K&G 3.5D
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Founder and Solo Euphonium
San Francisco Brass Band