Founding member Florence LaRue (middle right) leads The Fifth Dimension to a crowd of 3000 at Riverbank Park in downtown Flint on Monday. Even more people lined the Saginaw and Beach Street bridges to take in the legendary group as the Flint Symphony Orchestra backed them up. ‘Aquarius,’ ‘Let the Sunshine In’ and ‘Up, Up and Away’ were among the familiar songs the multi-Grammy-Award-winning group performed.