Very famous classical tune I'm stuck on

Classical but so famous I am completely stuck.
Many thanks in advance.
Attachment 82100

have you tried shazam app?

if its famous it should find it, hope this helps

Thanks for your message, Shazam can't find it, I tried it and Soundhound. But they are not famous for IDs classical.

It is also used in commercials / tv, deffo recognize it, no name tho :(

BUSTED
Tchaikovsky: Romeo and Juliet
https://youtu.be/3GuXpjdBqwA?t=826