Yamaha Euphonium with Case

YAMAHA YEP-321S (with case)
[Mouthpieces]
YAMAHA 48
YAMAHA 51
V. BACH 5GS
[Other]
Tuner
Oil
Grease
Cloth (Silver L, Polishing L.M)

Hello,
Thank you for viewing.
I tried playing my tenor horn, which I haven't touched in a while, but
I couldn't play it at all...
I purchased this 2 years ago.
I practiced a few times, changing mouthpieces,
but sadly, I still couldn't play it...

It's difficult to aim for a deep tone,
but it's a beloved instrument that resonates beautifully.

Thank you for your consideration.