Ludovico Einaudi says he was surprised his music was a hit in both pop and classical charts

The Italian composer and pianist has had 13 tracks in the top 20 classical chart recently.

His latest album, "In a Time Lapse" is the first piece in classical history to sell more digital copies than physical ones.

Ludovico says he likes to composes music in a meditative state when in the countryside or in Milan.

He also admits to Charlie and Louise that he was surprised that his music was a hit in both the popular and classical charts.