Rosendo Mercado Ruiz (born February 23, 1954 in Madrid) is a Spanish rock singer and songwriter. He was part of the groups Ñu and Leño, and is a prominent exponent of the so-called urban rock in Spain. First steps He was raised in Carabanchel, where he still resides (as of 2005). After giving up his studies in the ICAI engineering school, he joined the group Fresa, as a guitarist, in 1972. Fresa played covers of hits of the time, and sometimes accompanied other singers.