Based on the context and the answer, generate a question. 

Context: Even though it had already been a year , it still felt very surreal sometimes . In the past year , they had released three number 1 singles , held a successful concert in Tokyo Dome , went on a mini tour in Yokohama and Osaka , and did the musical , Summary . It was funny how life would come a complete circle .

Answer:

They played a major venue .



Why did the band feel the year had been a success ?