 "Hapa-haole" is the more proper name for what most 20th century Americans would think of as sung Hawaiian music, where the tune, styling, and subject matter has very distinct Hawaiian elements, but the lyrics are mostly in English.It became sung by both Hawaiians and contemporary performers, such as the Bing Crosby vehicles "Sweet Leilani" and "Blue Hawaii" in 1937.Alfred Apaka was arguably the foremost interpreter of hapa haole music, melding Hawaiian music with traditional American pop arrangements and English lyrics.