Riding to Washington on the wave of the Democrats’ midterm-election comeback is one John Hall of New York, member of the light-rock group Orleans and co-writer of the band’s hits, “Still the One” and “Dance With Me.” “Once we forgive Hall for penning such excruciatingly unshakable couplets as ‘You’re still the one who can scratch my itch / You’re still the one and I wouldn’t switch,’ let us acknowledge his singular place in American history: He is the first professional rock musician elected to Congress.”