some questions about hk and silksong symphony concerts

Ever since I first played HK, I've always wanted to see the game's music tracks performed live because I love the music that much. I live in Ireland tho so I highly doubt there'll ever be a HK/Silksong concert here lol

And I just found out that there will be an official HK/Silksong symphony concert all the way in Japan, even starring Amelia Jones – the singer in the City Of Tears track, but unfortunately I don't have the money to go all the way there and see it in person atm which sucks😓

So here are my questions:

1. How rare are official HK/Silksong concerts?

2. How likely it is that there'll be another official HK/Silksong concert held for the 10 year anniversary of HK next year?

3. Are there any upcoming unofficial HK/Silksong concerts around Europe?