Kai Lyu Sumner has seen concerts during 19 years.

Year   Concerts Seen  
2025 1 concert
2024 20 concerts
2023 10 concerts
2022 13 concerts
2021 8 concerts
2020 2 concerts
2019 8 concerts
2018 11 concerts
2017 5 concerts
2016 9 concerts
2015 23 concerts
2014 25 concerts
2013 22 concerts
2012 14 concerts
2011 10 concerts
2010 6 concerts
2009 4 concerts
2004 1 concert
2003 1 concert