Double was a Swiss music duo best known for their hit single "The Captain of Her Heart".

"The Captain of Her Heart" is a song by the Swiss duo Double from their debut studio album, Blue (1985). The song is a ballad about a woman who stops waiting for her absent lover to return. The single was an international success, reaching No. 8 on the UK Singles Chart and No. 16 on the Billboard Hot 100, thus making Double the first Swiss act to reach the top 40 on the latter chart.