There are more than one artists named Pussycat. 1. Pussycat was a Dutch soft pop/country group featuring the three Kowalczyk sisters: Tonny, Betty and Marianne. They scored a string of Dutch hits in the 1970s. In 1976 they scored their biggist hit with the song Mississippi, which climbed to number one in the UK Singles Chart. It was later followed by "Smile" in 1976, and "Hey Joe" in 1978. 2. Also Dutch, a mysterious trio from the world's biggest seaport: Rotterdam.