Thread is closed.

If Soundhound is correct and it sounds like it is, it's Arthur Fiedler & The Boston Pops from album An Arthur Fiedler Valentine (1972).
https://itunes.apple.com/us/album/an-arthur-fiedler-valentine/id268547548 ;)

That a start. Thank you,Ivan.

No. It's not Arthur Fiedler & The Boston Pops.

It's Arthur Fieldler all right (https://www.youtube.com/watch?v=v98Zohe_UTg) but not from that album.

Yep,I'd agreed it sounds like Arthur Fiedler and the Boston Pops. That's great big help,Ivan. Now to find which album it came from. 15 minutes is a very long record track.