On December 1st 2012, Mikel Renteria walks through the streets of Bilbao, carrying his guitar, amplifier and a poster, looking like a street musician.
Mikel is heading towards one of Bilbao's bustling pedestrian areas in the heart of town.
He sets up his equipment and begins to play Today Is My Future, one of the songs he has recently composed as part of a new album scheduled to come out in December 2012.
In 2010, Mikel and his wife, Mentxu, created a non-profit WOP (the Walk On Project) to support research aimed at finding a cure for neurodegenerative diseases.
Parents of 3 children, they were made brutally aware of such illnesses on October 13, 2008 when their apparently healthy 6-year-old son, Jon, was diagnosed with a fatal neurodegenerative disorder known as Leukodystrophy.
So on that first day of December 2012, few people knew what was about to happen, or that the event would become the largest and most complex flashmob produced to date.
At first apparently all alone, to the surprise of passers-by, Mikel was steadily joined by more and more people: the WOP Band, a symphony orchestra from the nearby Juan Crisostomo de Arriaga Conservatory of Bilbao, a chorus formed for the occasion, and over 40 people who simultaneously began to dance a choreography created specifically for Mikel's song.