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After the Funk Parade winds its way down U Street NW, afterparty events will fill most clubs in the neighborhood. The most celebratory one takes place at the Howard Theatre, where Lee Fields and the Expressions join the local go-go veterans of Trouble Funk to honor member Big Tony’s birthday. Big Tony has led the group since 1978, when it started filling area dance floors with its signature blend of synths, horns, and percussion, and tracks like the much-sampled “Pump Me Up.” Lee Fields, a North Carolina-bred elder statesman of soul, has released 16 albums since 1969. Often compared to James Brown, Fields has used his yearning, gospel-inflected timbre to impart stories about lost relationships and wail over Hammond organs, stirring the souls of his listeners. Count on the distinct but equally danceable grooves from both acts to lay out what the funk spirit is all about. Lee Fields and the Expressions performs with Trouble Funk at 10 p.m. at the Howard Theatre, 620 T St. NW. $30. (202) 803-2899. thehowardtheatre.com.