Are these musicians from various American orchestras? I seem to know the Trombone player being in the New York Philharmonic?( The guy with the Pony tail )
The trombonist with the ponytail is David Finlayson, who has been 2nd trombonist in the New York Philharmonic since 1985, if my memory is right. The guy immediately to Finlayson's right is Joseph Alessi, who became principal trombonist in the New York Philharmonic the same year. Yes, the duo are probably the best 1st and 2nd trombonist in the USA, possibly in the entire world.