The Scottish Chamber Orchestra (SCO) is an Edinburgh-based UK chamber orchestra. One of Scotland's five National Performing Arts Companies, the SCO performs throughout Scotland, including annual tours of the Scottish Highlands and Islands and South of Scotland. The SCO appears regularly at the Edinburgh, East Neuk, St Magnus and Aldeburgh Festivals and The Proms. The SCO's international touring receives support from the Scottish Government. The SCO rehearses mainly at Edinburgh's Queen's Hall.