6-Pack Band comprises six transgenders singing original songs, including a cover version of Grammy-winner Pharrell Williams' hit "Happy". They have been joined by Bollywood star Sonu Nigam for their debut collection.

We are taking one step at a time. There are total six songs. I felt very happy singing with them. They were singing my songs all the time, they have a very good vibe. I really enjoyed their innocence and child-like energy

--Sonu

Sonu said he felt pained to see transgenders being stereotyped in society.

When I was a child, I used to think what if I was born in a planet where people like me were in minority and others were majority... What would happen to me, my family because of that.

It used to sadden me very much, that is there no way we can't give them (Transgenders) a respectable job, proper business... Why can't it happen that we see them at normal places. Why do we see them on the streets, at marriage. Till when this will go on. It used to pain me a lot.

--Sonu

The idea was to transcend boundaries, so we thought instead of doing a Hindi song lets do an English one. They are always happy despite the fact that people abhor them, disrespect them. 'Happy', we hope, will be heard by every body.

--Director Shamir Tandon

As famous Indian actress Anushka Sharma says in a voiceover at the beginning of the video, the centuries-old hijras are “the third gender, ignored by most, tolerated by some, misunderstood by all.

"In India, the hijras are a community almost in exile,” Sharma continues. “Standing out at traffic signals after failing to blend in. Knocking on our windows in the hope for some kindness and perhaps a smile. But when they don’t get either they keep their chin up and find a way to simply be happy.