Today has a lot going for it; a rare celestial event, the official start of spring and the United Nation’s International Day of Happiness – an annual calendar event encouraging us to think about happiness as a “fundamental human goal.”

To mark this year’s event, which places a focus on our connections with others, the UN has teamed up with a host of global superstars to create #HappySoundsLike – a social media campaign that harnesses people’s love of music to start a global conversation and “inspire a better hope for tomorrow.”

Users are invited, using Facebook and Twitter, to share a link to the song that most puts a smile on their face to compile the world’s happiest playlist – which can then be downloaded for free.

It’s cleverly done – music plays such an important part in so many people’s lives, YouTube alone has more than 1 billion users, for some it’s a medicine, for others it sparks memories and it’s completely subjective, which gets people talking.

It’s this very talking that sings to the ambitions of the campaign on which UN 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.”

Want to show your solidarity? Share what #HappySoundsLike to you.