It's a song that was played during World Youth Day in Madrid. It's a tune remember to this day, despite the fact that it was played back in 2011.
It's the work of WYD's Choir and Orchestra, or the Orquesta Sinfonica y Coro JMJ, which set the tone as more than 1 million youths welcomed Benedict XVI.
Three years have passed, but many fans have asked for a compilation album. Now 148 musicians and 160 Spanish singers are looking into recording it.
Making that happen could cost over 30,000 dollars. So, the group started a 'crowdfunding' campaign, hoping to raise roughly 3,300 dollars to rent out sound equipment. They're looking for people to donate anywhere from five to 200 euros.
To thanks donors, the group is planning on writing an appreciation note on their website, to free concert tickets and even singing lessons.
The donation period will close on August 17th. If they haven't raised the money by then, they will return the money to donors.
Funding is critical for this type of project to move forward. For those who can't make a donation, the group has launched a social media campaign through twitter. Titled hashtag #yoestuveenlajmjmadrid2011, which translates to, I went to World Youth Day in Madrid 2011, the group is hoping that fans can share their favorite songs, so they'll know which ones to include in the album.