Swing Out Sister is a British sophisti-pop musical group best known worldwide for their 1987 song "Breakout", which was their only song to reach the US top 10. Various listeners have classified their sound as everything from smooth jazz to cool jazz to acid jazz.HistoryAlthough Swing Out Sister is currently a duo, they began as a trio in the UK. The group was formed by Andy Connell (keyboards) and Martin Jackson (drums), and were later joined by Corinne Drewery (vocals). The name came f