to date. In retrospect, La Canción de Juan Perro is now considered, by the band and critics alike, as Radio Futura's finest effort. It is also credited for establishing in Spain the virtually unknown formulations of a Latin Rock based on standard anglosaxon pop-rock but, at the same time, deeply rooted in Spanish popular music, while striving for renovation at the same time. Santiago Auserón said regarding this record "we want the best with this record. We want to lay the foundations of Hispanic Rock"; the critic wrote regarding La Canción de Juan Perro: "it is not only a masterpiece of our domestic rock but it contains the entire musical landscape sung in Spanish during the last decades". The particular sound crafted in "La Canción de Juan Perro" was to become, later on, the touchstone of the Spanish musical scene. Also, beginning with this record, Santiago Auserón gave renewed importance to the lyrics, he has since become one of the finest lyricists in Spanish, earnestly using and renovating popular terms which had gone partially out of fashion. Soon after the supporting tour for "La Canción de Juan Perro" started, Enrique Sierra was diagnosed with polycystic kidney disease and had to be temporary replaced by another newly hired session musician: Javier Monforte. Sextet and live album By 1988 Enrique Sierra had overcome his health problems but the band decided to keep Javier Monforte as an additional guitar player thus turning the band into a sextet (in the meantime, drummer Carlos Torero had been replaced by Óscar Quesada). There was not any new LP scheduled for 1988 but the band toured instead and, in the meantime, released a new maxi-single --Paseo con la Negra Flor—which is basically a new studio take of their song La Negra Flor (included in La Canción de Juan Perro), including features of what had been its growth as a song when performed live. The new single included a spoken word section which represented, once again, a big novelty in the Spanish musical scene. La Canción de Juan Perro marked a success in the band's career, yet, following the suggestion of the label to compensate the relatively high budget (for a Spanish 1980s band) spent in NYC, the last two concerts of the tour were recorded, mixed and released by beginning 1989 as Radio Futura's only live album: Escuela de Calor which became an instant big seller. Once