Ruby21 has seen concerts during 12 years.

Year   Concerts Seen  
2024 7 concerts
2023 11 concerts
2022 10 concerts
2021 2 concerts
2020 4 concerts
2019 17 concerts
2018 9 concerts
2017 2 concerts
2016 5 concerts
2015 3 concerts
2014 3 concerts
2013 1 concert