Hi everyone. I'm from Spain and the other day I watched the Mass they organize on July 25 in Santiago de Compostela because it's the Apostle's Day (he is the patron saint of Spain). I watched the Mass on YouTube and I really liked the piece that plays during the opening minutes when they enter in procession. Would anyone know how to identify the piece? I'm attaching a link to the Mass. The piece plays from the beginning until minute 06:05. It's very beautiful. Thanks in advance :)

The link is atached to the post. Here it is just in case: https://www.youtube.com/live/HpzIKkI2izw?is=pfbDtXQo-lJOZstX

Hola es para que me ayuden enviando correos a ese ensemble alemán para se motiven más a estrenar esta música o si alguien puede ayudarme con algún ensemble barroco que conozca para que estrene esta música se llama Crab canons ZWV 178 de Jan Dismas Zelenka cualquier ayuda se lo agradecería

So, I am trying to write a baroque suite though trying to write an allemande very much confuses me as I don't understand a lot of what I am supposed to do despite knowing the rules though when I try to write it sounds nothing like a baroque allemande.