Tomorrow night they're going to party like it's Aug. 1, 2013 – the day that same-sex marriages will be legal in Minnesota, pending Gov. Mark Dayton's signage Tuesday of the bill that passed the Senate today.

A truly rainbow-like coalition of Twin Cities musicians will perform at a free outdoor bash celebrating the legislation at Ecolab Plaza in downtown St. Paul, including Chan Poling and members of the Suburbs, the Twin Cities Gay Men's Chorus, P.O.S., Hookers & Blow, Zoo Animal and the Jack Brass Band. Mayor Chris Coleman and the City of St. Paul are hosting the party and calling it the "Love Is the Law" concert, named after the Suburbs' 1984 hit that became an anthem for the legislations advocates.

The party will begin after Dayton's 5 p.m. signing ceremony around 6 p.m., and is scheduled to last until 10:15. Ecolab Plaza is at 375 Wabasha St. N. More info on the concert can be found on the city's website.