Benckert got her breakthrough as a singer and composer when she had three songs in the Swedish qualification for the Eurovision Song Contest in 1984. She performed one of the songs herself and received fifth place. In 1986, she won the Swedish round and was placed 5th in the Eurovision Song Contest. She writes music for many Swedish artists and appears as a backup singer as well. She took part in Roxette's Joyride world tour as a backup singer.
On stage, she is mainly seen in musicals, including Beauty and the Beast and Chess.