Michael Lagdon has seen concerts during 12 years.

Year   Concerts Seen  
2009 4 concerts
2005 1 concert
1979 2 concerts
1977 1 concert
1975 1 concert
1973 12 concerts
1972 4 concerts
1971 3 concerts
1970 2 concerts
1969 2 concerts
1968 2 concerts
1967 6 concerts