Étude No. 4 is a chord study, but does not employ all of the harmonic and polyphonic resources of the instrument (
Santos 1985, 23).
References
Cited sources
Santos, Turibio. 1985. Heitor Villa-Lobos and the Guitar, translated by Victoria Ford and Graham Wade. Gurtnacloona, Bantry: Wise Owl Music.
Further reading
Villa-Lobos, sua obra. 1989. Third edition. Rio de Janeiro: MinC-SPHAN/Pró-Memória, Museu Villa-Lobos.
Online edition, 2009
Wright, Simon. 1992. Villa-Lobos. Oxford Studies of Composers. Oxford and New York: Oxford University Press.
ISBN0-19-315476-5 (cloth);
ISBN0-19-315475-7 (pbk).