Britney Spears' music producer William Orbit has defended the singer's auto-tune controversy saying that software can't manufacture charisma.

Orbit said that the auto-tune had always been a hot-button topic and not as much as the issue of photoshopping in the fashion press, but more than say, the use of CGI, looping, and stunt doubles in the movies, Us Magazine reported.

The Brit music producer said that regardless of the fun and games that they had with studio production, the main thing to keep in mind with Spears was that tens of millions of people enjoyed the music.

The 57-year-old music composer said that he could never get angry about pop music or any music and could get angry about the growing inequality gap.