XMAS Duet Recomendations

[BassBlatt]

Hi everyone.

I need some Xmas Tuba Duets. If they are for trombone or euphonium thats fine too. I'm really looking for something on the more challenging side, but as long as they are well written that would be great.

Maybe someone has them in pdf and can email then to me? I'm going to the local music store tomorrow, but I have a feeling I'll come up short.

Thanks in advance!