After his first solo album, entitled "A Cámara Lenta" (2020), released in full pandemic and presented live on an extensive tour during the years 2021 and 2022, he decided to consolidate the project giving it a band format. With this premise, bassist David Molero and drummer Uri López join DEKER, who bring to the personal songs of Marcos a more rock and consistent basis.

In 2024 this change materialises in the album ‘Lo Principio De Todo’ (Capsula Records), a compilation of songs with references to the best rock of the 90s and 2000s and at the same time full of emotional melodies. The band, formed by musicians with a lot of experience, presents its proposal in a fun and effective live performance, which transmits positive energy and leaves no one indifferent.