WFNK (107.5 FM) is a radio station broadcasting a classic hits format, known on air as Frank FM. Licensed to Lewiston, Maine, USA, the station serves the Portland, Maine area. The station is currently owned by Nassau Broadcasting Partners. Several times a year WFNK has a 500 song countdown made up of the greatest songs ever made. It usuaully happens on Memorial Day Weekend, 4th of July and Labor Day Weekend.