Riverside Theatre's production of Mamma Mia! adds two additional performances! Mamma Mia! runs April 10-29, 2018 on the Stark Stage and is sponsored by Dave Horner with additional support from Riverside Theatre's Patron Producers' Group.
Riverside Theatre, led by Producing Artistic Director/CEO Allen D.
The Gateway's latest offering is an absolutely thrilling production of the worldwide blockbuster hit Mamma Mia!.
The Gateway will take Long Island by storm at The Patchogue Theatre with the international smash hit Mamma Mia!, and will dazzle the audience from July 19th through August 5th.
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