Written in Paris in 1929, these twelve Etudes were dedicated to Andres Segovia.
12 Etudes:
Xuefei Yang plays Villa Lobos Etude No.7
Thesis: Thompson, Robert P. 1990. French influence in the Douze etudes and related works of Heitor Villa-Lobos. Thesis (M.M.)--Ball State University, 1990.
In their book Choro: a social history, Tamara Elena Livingston-Isenhour and Thomas George Caracas Garcia discuss the influence of Chopin on the guitar etudes.
"To some degree, his guitar works also pay homage to Chopin, whose piano etudes were clearly the model for Villa-Lobos's estudos for guitar. These are true concert etudes for the guitar and, like the Chopin works, are meant for the stage; they are not limited to the status of mere pedagogical tools. Villa-Lobos's Estudos also represent an attempt, consciously or subconsiously, to legitimate the guitar as a concert instrument and raise it to the level of the piano..." (p. 189)
Solo guitar
Villa-Lobos, Heitor, and Andrés Segovia. 1953. Douze études = 12 estudos pour guitare. Paris: Éditions Max Eschig.
| Collected Works For Solo Guitar By Heitor Villa-Lobos (1887-1959). Guitar solo book for guitar. 95 pages. Published by Durand. (HL.50560932) Your price $34.95 Usually ships in 24 hours See more info or add to cart |

Julian Bream's disc of the Preludes, Etudes, and Guitar Concerto is at the top of my list: Guitar Concerto, Etudes, Preludes (Bream)
Timo Korhonen's Heitor Villa-Lobos: Complete Works for Guitar, Vol. 1 on the Ondine label includes superb performances of the Concerto, the Etudes, and the Introduction to Choros
I'm a big fan of Canadian guitarist Norbert Kraft. You can't go wrong with his Naxos CD of the Norbert Kraft: Complete Music for Guitar (Naxos)
And on DVD:
The Etudes are very commonly programmed in modern guitar recitals and concerts. The Villa-Lobos Concerts database certainly under-reports the number of concerts with at least one Villa-Lobos Etude.