After the ballad-heavy In the Wee Small Hours, Frank Sinatra and Nelson Riddle returned to up-tempo, swing material with Songs for Swingin' Lovers!, arguably the vocalist's greatest swing set. Like Sinatra's previous Capitol albums, Songs for Swingin' Lovers! consists of reinterpreted pop standards, ranging from the ten-year-old "You Make Me Feel So Young" to the 20-year-old "Pennies From Heaven" and "I've Got You Under My Skin." Sinatra is supremely confident throughout the album, singing with authority and joy…