Many singers have come and gone in Seventh Wonder over the years, among others Ola Halén of power metal band Insania Sthlm.
Van Halen | Eddie Van Halen | Ola Jordan | Jump (Van Halen song) | Alex Van Halen | Van Halen (album) | Ola Dybwad-Olsen | Wolfgang Van Halen | Ola Thommessen | Ola Rotimi | Ola Raknes | Ola Mosafinn | Ola Hansson | Ola Englund | Ola Cohn | Music of the World Cup: Allez! Ola! Ole! | Beck-Ola | Rock-Ola | Ola Ullsten | Ola Tidman | Ola & the Janglers | Ola Snortheim | Ola Nordmann (song) | Ola Nordmann | Ola Magnell | Ola Kala | Ola Hanson | Ola Halén | Ola Bratteli | Ola Belle Reed |