hyenal wrote:
Can someone recommend me one of the missing pieces which is not that hard and suitable for small public performances? I think I'll have to make one in January again and have no prepared pieces now. Besides I'd like to participate in this project of you guys

Try Youtube. There are lots of recordings of the Triakontameron, but I'm not sure if the ones missing from our collection are there or not. Also, all them are on IMSLP so you can glance at the ones missing and see if they look appealing to you.
If you want a nice couple of Triakontameron to play for public - regardless of whether or not we have them on our site already - you can't go wrong with Alt Wein and The Salon. Those are two of my favorites and audience love them. Also, there is a real short one called The Little Tango Rag. It's only about a minute long and pretty easy to play. It's a great one to end with because it's very cute! I'll be playing it myself this coming Friday but didn't know I'd be playing in public until a few days ago so now I'm frantically trying to memorize a couple pieces; this Tango being one of them. I'll be playing on a ship - a first for me!