Nine Inch Nails [ tickets ] cancelled Wednesday's (5/10) scheduled appearance at Nassau Coliseum in Uniondale, N.Y., because frontman Trent Reznor strained his vocal cords. The cancellation comes a night after Reznor was joined onstage by surprise guest Marilyn Manson [ tickets ] for two songs at New York's Madison Square Garden.

Promoters ask those holding tickets to the Nassau Coliseum show to obtain refunds at their point of purchase.

Reznor and Manson have been feuding for years, reportedly because Reznor was angered by the way he was portrayed in Manson's autobiography. The two have evidently mended fences, and Manson will appear in drag in the forthcoming NIN video "Starf***ers, Inc."