Answer
Buddy Knox and Jimmy Bowen's rockabilly hits laid the groundwork for Klein's subsequent success in the music industry. Their chart-topping songs, such as "Party Doll" and "Hula Love," defined the genre and captivated audiences with their infectious melodies and rebellious spirit. By building upon their achievements, Klein was able to further popularize rockabilly music and solidify his position as a prominent figure in the music scene.