Note that the flugel-horn, especially as played by Nakariakov (on his low-bass-enabling 4-valve instrument) has been praised for emulating so well: the cello (by string players, to boot!)

Herewith this "bass" example, Variations on a Rococo Theme/Tchaikovsky: a live Russian concert and post-interview with Nakariakov.

Meeting N., later holding that very instrument: I count as one of a precious few brushes with a live ~immortal. We his fanbois have already awarded that mantle (beats epaulettes). And he isn't even dead yet.