'World's Happiest Playlist' unveiled on United Nations World Happiness Day

"I feel good." "Every little thing is gonna be alright." "Your love keeps lifting me higher and higher."

These familiar lyrics belong to some of the classic, uplifting tunes comprising this year's World Happiness Day project by the United Nations: Yes, it's the 'world's happiest playlist," and yes, of course Pharrell Williams is one of the collaborators behind it.

The international organization created the annual World Happiness Day in 2012, to rejoice in unity and call for a "more inclusive equitable and balanced approach to economic growth that promotes sustainable development, poverty eradication, happiness and the well-being of all people."

This year, the U.N. initiative invited people to share their favourite happy songs, tweeting them with the hashtag #HappySoundsLike.

In a statement about the project, U.N. Secretary-General Ban-Ki Moon said:

"On this day, we are using the universal language of music to show solidarity with the millions of people around the world suffering from poverty, human rights abuses, humanitarian crises and the effects of environmental degradation and climate change."

After many tweets and collaborations from the likes of popular artists like John Legend, James Blunt and David Guetta, the final playlist comes out to just six songs, spanning five decades:

1. I Got You (I Feel Good) – James Brown and His Family (1964)

2. Kiss – Prince and The Revolution (1986)

3. Three Little Birds – Bob Marley and the Wailers (1977)

4. (Your Love Keeps Lifting Me) Higher and Higher – Jackie Brown (1967)

5. Independent Women Pt. 1 – Destiny’s Child (2000)

6. Made to Love – John Legend (2013)

You can check out most of the songs on YouTube, in this playlist:

Pharell also commented on this year's happiness project:

"In a year where there is so much turmoil in the world, from social conflict to climate change, we need moments to stop and celebrate happiness," he said in a statement.

"Protecting our planet is fundamental to the pursuit of human happiness and that is why we have chosen to support Live Earth’s movement to raise a billion voices for climate action. We believe that happiness can change the world."

Last year's project, the video and Pharrell-driven '24 Hours of Happiness' invited people to post videos of themselves having a good time to the strains of the star's major hit (what else?) 'Happy.'