The final chapter of Cai's short first book ends with ''Canción de la primavera'', which finds the back operating back to a quartet, now with José Mariscal as the only guitarist.If we had to put the label of Andalusian Prog in one and only album, this could be a solid candidate.It's not as symphonic as the band's previous albums, it's not Fusion either, this is technically brilliant but quite commercial Prog Rock with beautiful, romantic lead vocals and an omnipresent Flamenco spirit, from the nice melodies to the excellent solos.