In 1991 Zigman saw 2 performances during 2 concerts with 2 bands at 0 venues in 1 location.

Date   Concert   Venue   Location  
Jul 18, 1991
Kansas

Celebrate 1991 (Jaycees annual festival)

Marinette, WI
Jul 17, 1991
Frankie Valli And The Four Seasons Marinette, WI