In the 1969 Broadway musical "1776", the song "He Plays the Violin" is sung about which Founding Father?

Johnny Mercer wrote new English lyrics for which 1902 German song, a No. 1 hit for the Mills Brothers in 1952? Peter Frampton's 1976 hit, which peaked at No. 12, reached No. 1 in 1988 when Will to Power paired it with "Free Bird"… Which composer's opera "The Marriage of Figaro" premiered in Vienna on May 1, 1786? Florenz Ziegfeld produced which 1927 musical, whose song "Can't Help Lovin' Dat Man" includes the line "Fish gotta swim… In 1927 Al Jolson sang which Irving Berlin song in "The Jazz Singer", a tune that became a hit for Willie Nelson about… Which pop duo had a 1989 hit with "Blame It on the Rain"? Which Motown group had a 1978 No. 1 hit with the ballad "Three Times a Lady"? Which 1847 Giuseppe Verdi opera, based on Shakespeare, features choruses of singing witches?