Well-known party enthusiast Andrew WK hasn’t released an album in six years, but the Met is hosting a solo show by the brony who gave us the singles “Party Hard,” “We Like To Party,” “I Want To See You Go Wild,” and “Go Go Go Go.” I’ve always enjoyed the sincerity of Mr. WK’s persona, and the fact that he’s not afraid to release, say, an album of solo piano improvisations or an album of Japanese pop covers. This ought to be good.