Take part in in the latest edition of #ISing to be recorded at CosmoCaixa Barcelona!

After the success of #ISing Viva la Vida, #ISing Hallelujah and #ISing Bohemian Rhapsody, this time we'll be performing the carol Joy to the World, together creating a participative choral video to be broadcast this Christmas.

You'll be directed by Igor Cortadellas and work together with Santi Serratosa for the sequence of movements. We'll also benefit from the collaboration of Josep Vila for the musical arrangement.

Would you like to take part? Sign up now!

Fill out the registration form!

Registration deadline: 12 October 2021 at 23:59 h CET (UTC+1).


  • Open to people aged 16 and upwards with some musical and/or choral experience.

  • Places are limited. Should more people apply than the places available, a draw will be held before a notary to decide, at random, who'll be admitted and who'll be on the waiting list, albeit ensuring a balanced proportion of voices.

  • Final confirmation of participation will be received in writing as from 15 October 2021.

  • Once applicants have received final confirmation of their participation, they be sent the score and audio as reference. Participants will be expected to know the piece before the rehearsals.

  • #ISing Joy to the World will be performed using a four-voice musical arrangement lasting approximately 3 minutes. The arrangement will be provided once participation in the project has been confirmed. The proposed choreography will be learned during the rehearsals.

» Read more essential information for taking part


Participants must attend all the rehearsals planned.



Saturday 13

From 4 to 8.30 pm

Rehearsal and audio recording

Sunday 14

From 10 am to 2 pm

Movements rehearsal

Friday 19

From 7 pm to 12 am

Filming general rehearsal

Saturday 20

From 6 pm to 12 am


Friday 26

From 7 pm to 12 am


Saturday 27

From 6 pm to 12 am


Essential information for taking part

Children under 16 who are selected will have to present the corresponding authorisation to take part signed by their parents or legal guardians before the rehearsals begin.

As Data Controller, ”la Caixa” Foundation will process your personal data under the terms described during the online registration process (including your image and your voice). Participation in this project also implies that you consent to ”la Caixa” Foundation using your image (including your voice) and your performance, free of charge, regarding the recordings, videos and/or audiovisual materials in which your image appears and your performance is included, for their full, fragmented, separate exploitation and/or integrated within a production and/or recording exclusively owned by ”la Caixa” Foundation, which may exploit these without any kind of limitation, by any means or support (analogue, digital, OTT platforms in any form, social media, internet, etc.) in any form (i.e. subscriber-only, open access and any other) and for any purpose, including promotional, with a global scope and for the duration of the rights. We inform you that images are also considered personal data and are therefore subject to the data processing document attached to the online registration form.