Fernandes said that for last two to three decades he has been penning songs on political and social issues.
"People have been asking me to join politics. The reason why I didn't join politics was that every party was an embarrassment," the singer, who is known for his hit songs like 'Oh meri munni' and 'Humma humma', told reporters.
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Praising AAP, Fernandes said it has become a political party by force after trying its best to change the system from outside for years.
"During Mahatma Gandhi's time the politicians were gentlemen but today they are criminals...," he added.
Fernandes said it was a "shame" that an old man like Anna Hazare has to go on fast and felt politicians in the country are "waiting for him to die" during the next fast so that they can continue with their "mess".
Fernandes along with social activist Dr Oscar Rebello joined AAP soon after the party's stunning showing in the recent Delhi Assembly elections.
Both have clarified that they will not be contesting any polls.