Here are the world's 'happiest' songs

The "World's happiest playlist" was recently unveiled by the Secretary-General of the United Nations for the International Day of Happiness with Stevie Wonder anthem.

Ed Sheeran, James Blunt, David Guetta and John Legend were among the musicians and actors who contributed to the UN's official feel-good selection, designed to spread cheer among listeners and raise awareness of the International Day of Happiness, the Independent reported.

Ki-moon, the UN secretary general, led the way with his nomination for Signed Sealed Delivered by Stevie Wonder, himself a UN messenger of peace, who advocates on behalf of people with disabilities.

Sheeran chose the female liberation anthem 'Independent Woman' by Destiny's Child, whilst Blunt, whose music brings both happiness and misery to many, offered 'We Are Young' by Fun, a song he said "celebrates the moment."

'Zip-a-Dee-Doo-Dah' by James Baskett was included at the request of actor Michael Douglas, who said it "always makes him smile, especially during the muddy season."

The UN urged supporters to join the "Global Happy Party" by uploading photos and tweets under hashtags HappySoundsLike, happyday and happyplanet. However some cynics used to the hashtags to suggest that a sunny playlist alone was insufficient to effect meaningful global change.

The playlist also includes; 'Infinite Love' by A R Rahman, Britney Spears - Kiss by Prince, Charlize Theron - Every Teardrop is a Waterfall by Coldplay, David Guetta - Imagine by John Lennon and Yoko Ono, Nicole Sherzinger - Three Little Birds by Bob Marley among others.