The Notos Quartet and the Excelsa Quartet have won the top prizes at the Charles Hennen International Chamber Music Competition in Heerlen, the Netherlands. The Notos Quartet, a German piano quartet which earlier this month won the 2011 Parkhouse Award in the UK, received first prize in the piano-and-string-ensemble division. The Excelsa Quartet, based in Boston, US, won the top prize in the string ensembles division, and was also awarded the EMCY Culture Prize. Each first prize was worth €6,000.