Hello! Thank you in advance to anyone who can help me. I currently play a celtic harp, but have wanted to play in Irish sessions for quite some time. Since the harp seems to be rarely used in sessions and I have been interested in concertina for awhile, I'm thinking of giving it a try. I understand the Anglo is the concertina of choice for Irish music. So I have many questions. Is it difficult to join in or find sessions where a concertina would fit in? I realize I will give myself at least a year or more to learn the instrument before even considering a session. Next, would a 30 button be a better choice over the 20, and is there plenty of music available out there to learn on a 30? There is a shop in my area that offers lessons and currently has a Silvetta 20 button, however, I saw and heard a Scarlatti 20 on you tube that sounded pretty decent. I haven't seen many 30 button, but am thinking that it might be wise to invest in one over 20. Any thoughts of advice would be greatly appreciated! Thank you!