Born in Madrid in 1949, his talent for music appeared at an early age. In 1968 he became a part of 'Los Canarios'.
He subsequently began his career as a solo singer, when in 1970, the song 'A los que hirió el amor', went to number one on the top sellers charts. Inmediately following this record, Pedro Ample (his true name) chose Ruy-Blas as his new stage name, in honor of probably the best theatrical work of the immortal french writer, Victor Hugo.
Between 1970 and 1974, he recorded a few albums some of which were censured because they were considered 'politically incorrect' at the time (this was during the dictatorship of Franco). In the year 1975 Pedro recorded for Polydor his first record as a composer and producer, it was entitled ' Luna llena' (Full Moon) and this recording brought together a group of young musicians (Jorge Pardo, Tomas San Miguel, Jose Antonio Galicia, etc), who today are outstanding artists in their own right that also record in the US for the label Miami Records.
One year later, he recorded an album entitled 'Dolores'. On this particular session, Pedro assumed the chair of composer, singer and drummer. Very shortly after, he formed the group that would call themselves by the same name as the previous record. This is how the band 'Dolores', was born, which would mark new horizons for the state of Jazz-Rock (Fussion) in Spain. The next record, 'La Puerta Abierta' (The Open Door) also produced by Pedro, took the group to the stages of the International Jazz Festivals of San Sebastian, Guetxo and Vitoria in 1977, Musically this is what would eventually become the meeting with Paco de Lucía, and later with Camarón de la Isla.