MUMBAI: The United Nations and the world's most personalised music streaming service, MixRadio, marked International Day of Happiness and the launch of the #HappySoundsLike playlist with a surprise performance from global singer/ songwriter, Cody Simpson and surprise performance from girlfriend Gigi Hadid, at South by Southwest.

Finalising a weeklong campaign to raise awareness of International Day of Happiness, the #HappySoundsLike playlist created by MixRadio, was unveiled to guests attending.

Recognising that music has the power to spread happiness and inspire solidarity and hope for a better tomorrow, United Nations Messengers of Peace and Goodwill Ambassadors, along with international artists including Britney Spears, Nicole Sherzinger, Ed Sheeran, Charlize Theron and John Legend contributed their happiest track to create the world's happiest playlist, #HappySoundsLike.

Cody Simpson, comments, "I am really pleased to be part of such an amazing campaign with the United Nations and MixRadio to raise awareness of International Day of Happiness. I hope everyone gets behind the day and listens to the #HappySoundsLike playlist".

Jyrki Rosenberg, Head of MixRadio, comments, "This year, to mark International Day of Happiness, we have been fortunate to partner with the United Nations to support and raise awareness of such an inherent aspiration that we share the world over, happiness.

"Through collaborating with international superstars, we hope #HappySoundsLike will bring a smile to faces around the world and inspire hope for a better tomorrow".

Established by the United Nations General Assembly in 2012, International Day of Happiness acknowledges that "the pursuit of happiness is a fundamental human goal". In its 70thanniversary year, the United Nations will be undertaking several campaigns to help achieve this goal. The playlist has been created by MixRadio .