NEW YORK -- Accusations and counterclaims are piling up as lawyers for organizers of the Woodstock 50 festival and their onetime financial partner head for a New York City courtroom.

A hearing is set Monday in the clash over money, control and even whether the anniversary show will happen in August in Watkins Glen, New York.

Investor Amplifi Live LLC announced April 29 that it was cancelling the event amid health and safety concerns.

Organizers Woodstock 50 LLC say it's still a go.

They sued last week and said Amplifi Live sabotaged the festival, can't singlehandedly cancel it and plundered nearly $18 million in funds.

Amplifi Live said in court papers Sunday that organizers' "incompetence" spurred it to take control, nix the festival and take back the money. Amplifi Live is part of Japanese marketing firm Dentsu.