Six buskers from the Paris Metro are featured performing an a cappella version of ‘Jingle Bells’ in a new social campaign, created by We Are Social Paris for its client, the rail operator RATP Group.Each musician, whose skills range from singing to beatboxing, features in an Instagram story performing a portion of the song. As a new story appears the next performer’s voice overlaps with the previous one, until the final frame – where all six musicians come together as a choir in their unique version of the Christmas classic.The song is also being shared on Facebook, Twitter and Youtube using the hashtag #ChoraleDuMétro, with a mashup video featuring the six musicians singing together.People are being encouraged to create their own versions with friends and family by accessing RATP’s Instagram feed using several phones to play different soundtracks featured on the channel.We Are Social and RATP took inspiration for the campaign from US television host Jimmy Fallon and American hip-hop band The Roots, who have performed a cappella covers of numerous songs together on Fallon’s The Tonight Show, including this version of ‘We Can’t Stop’ with Miley Cyrus. Fallon also has a feature on his show where he performs with famous musicians, all in disguise, in a New York subway station. Christina Aguilera, Maroon 5 and U2 are among the stars to have taken part in the segment.CreditsAgency: We Are Social ParisDeputy General Manager: Ludovic ChevallierCreative Director: Nicolas DuménilArt Director: Paul Grange & Fabien GailleulMotion Designer: Marius SaltetSenior Account Manager: Corentin PicautJunior Account Manager: Kourech SadakalyAmplification Manager: Boris Le GuenTV Producer: Cecile OussetProduction Executive: Camille LacarrereAssistant TV Producer: Marie-Flore HoupertMedia Manager: Jean ChabbertAgency Internal Lawyer: Maria CoupeaudJunior Agency Internal Lawyer: Mathilde Pallud