"Somebody That I Used to Know" is a song by Australian singer and songwriter Gotye from his third studio album Making Mirrors, and features New Zealand-born singer Kimbra. The song was written by Gotye himself, lyrically about his experiences he had in broken relationships. The song was released on 6 July 2011 as the second and lead single off the album.
The song was released into critical acclaim by music critics and a surprising success in Australia, peaking at number one in the country for two weeks so far. The song received other success in European countries and New Zealand, peaking at the top 10 single charts there.
It is Gotye and Kimbra's highest charting, selling and their first number one song in Australia, causing their previous singles and albums charting at the top 100 in Australia too.