"J'ai tout oublié" is a 2001 song recorded as a duet by the French artist Marc Lavoine and the Italian singer Cristina Marocco.

This song allowed Lavoine to take up with the success, because its previous single failed to reach Top 50.

As of August 2014, it is the 63rd best-selling single of the 21st century in France, with 359,000 units sold.

After reaching a peak at number four in the 13th week, the single dropped on the chart.

[7] It was certified Gold disc[8] and featured at number 50 on 2002 Annual Chart.