Sean O'neill has seen concerts during 25 years.

Year   Concerts Seen  
2024 1 concert
2023 2 concerts
2022 1 concert
2021 1 concert
2011 1 concert
2006 1 concert
2005 1 concert
2004 1 concert
2002 1 concert
2000 1 concert
1999 1 concert
1996 1 concert
1991 2 concerts
1990 1 concert
1989 1 concert
1988 2 concerts
1987 4 concerts
1986 3 concerts
1985 2 concerts
1984 4 concerts
1983 5 concerts
1982 2 concerts
1981 6 concerts
1980 2 concerts
1978 2 concerts