In 1965 she represented the Netherlands in Naples , Italy , at the Eurovision Song Contest , with the song '' ' t Is genoeg '' ( It 's Enough ) ; Netherlands placing eleventh . A year later Vandenbos finally achieved chart success with her first hit single , '' Ik Ben Gelukkig Zonder Jou '' ( I am happy without you ) . In the early 1970s , Conny parted company from Phonogram Records and signed with Basart Records in January 1973 . During her contract at Basart several albums were released and her singles charted frequently in the Dutch Hit Charts . In this period she covered many well known foreign songs with Dutch lyrics , including a complete album of songs by Janis Ian titled '' Conny Vanderbos Zingt Janis Ian '' . The duet with Janis Ian '' Do n't Leave Tonight '' reached number 17 in the Dutch charts in December 1980
Eurovision Song Contest
Eurovision Song Contest 1965
Conny Vandenbos