Not Harshing Your Mellow But Heating It Up

Nope, that's a mellophone, a mellow brass instrument, not a cheesy electric instrument.  I looked up online for recordings made with a Mellotron and the longest one I saw was 18 cuts long, almost all of which I'd suspect no one would recall.   I wonder if the times a slide whistle was used would be a longer list, it would include the several numbers Louis Armstrong recorded with slide whistle. 

Anyway, here's one of the few jazz players to make much use of a mellophone, the multi-instrumentalist

Don Elliot playing Gershwin's Strike Up The Band 

Don Elliott, mellophone
Hank Jones, piano
Wendell Marshall, bass

Shadow Wilson, drums