It was composed in the summer of 2003 at the request of Joan Company, for a concert of Spanish choral music composed in the 21st century, and starts from a poem written in Galician by Federico García Lorca, made up of a series of linked couplets that open and close with a quote from a popular Galician song.
Between each couplet I inserted fragments of some of the Galician songs collected and glossed by Rosalía de Castro, with which the resulting literary alternation between the cultured and the popular serves as a structural pretext for a correspondence in the musical, but of an inverse character: In this way, Lorca's couplets are treated in a lighter and simpler way, with a harmonic and melodic treatment that is even popular at some point, than the Galician songs, which are inserted in a much denser and more complex polyphonic elaboration.
The Lullaby for Rosalía Castro, dead, was premiered on April 22, 2004 at the Teatro Monumental in Madrid by the ORTVE Choir under the direction of Joan Company, to whom it is dedicated.