"Today marks the ten year anniversary for Calc. by OneRoom a.k.a. Jimmy-thumb P (ジミーサムP) and even though the timeline was tight, I was able to organise a chorus!
I would like to thank everyone for accepting myself request. This project would not be possible with everyone's help. So once again, I'm grateful for everyone participation." - "Sencha", the organizer responsible for "Calc." 10 Year Anniversary Chorus