The 36-year-old, who has dropped down the rankings at the Nou Camp due to Victor Valdes's number one spot, announced the news via his Twitter account.
"Contract signing (after 22 years in the shadows as a producer) with Sony Music Spain," Pinto wrote.
"Just one example that work, humility, perseverance, enthusiasm...your dreams, whatever [they are], can be met. No matter what, no matter how small or large it may be, no matter what they say, what matters is that you enjoy it and be happy."
Pinto has been working with the group for nearly two decades.