Nancy Sinatra and Frank Sinatra were prominent figures in 20th-century American pop music, each carving out distinctive careers. Frank Sinatra, known for his smooth, resonant voice and interpretive abilities, was a defining crooner of the Big Band era, while Nancy Sinatra, his daughter, became notable for her 1960s pop hits with a blend of rock and roll and girl group influences. Frank's signature works include "My Way" and "Strangers in the Night," while Nancy is best known for "These Boots Are Made for Walkin'". Their duet "Somethin' Stupid" remains a landmark in popular music, showcasing the unique blend of their vocal styles.