10... or 15?

 I decided to write a chapter just on the canciones españolas antiguas. What I've noticed is a certain slipperiness. 

The core of this collection is 10 songs. 

The recordings with Lorca and La Argentinita contain 12 songs, though, with two extra ones not included in the Obras completas or the sheet music. 

The sheet music contains 13 songs, three of which are not recorded by Lorca and La Argentinita. There are thus 15 songs in total. Subsequent singers draw from the 13 in the sheet music, but not from the 2 extra recorded by Lorca and not included in the sheet music. Or perhaps these two are not accompanied by Lorca at all!  This image says "accompanied at the piano by Inés Gómez Currillo""

Since this pianist was born in Argentina in 1918, it is unlikely that she recorded this in 1930.