Very famous classical tune I'm stuck on

[patrinos]

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

[brady]

have you tried shazam app?

if its famous it should find it, hope this helps

[patrinos]

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

[BUNKERHEADZ]

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

[patrinos]

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