By far one groundbreaking band that stood out among the music mix belonged to Ricardo Marrero and the Group. This last ensemble lead by the brilliant pianist/percussionist/arranger Marrero, gave rise to Latin jazz flautist Dave Valentin, vocalists Angie Boffil and Nancy O’Neil. Providing a launching pad of cutting edge music between the old school Afro-Caribbean sound and new school fusing, Marrero mixed Latin rhythms with R&B, avant-garde jazz, rock, classical, funk, and electronics with modal influences at times using two-tone melodies. Later when Marrero worked for Latin Percussion he was responsible for the company's quality control helping to design the Patato model congas specifically the super quinto and the tapón cowbell named after Richie’s small stature. He also helped developed the claw, a mount for a percussion mike. Marrero went on to become an original founding member of singer/songwriter Ruben Blades’ critically acclaimed group Seis del Solar the first to also introduce synthesizers into the Latin sonic fold.