While the tangos of Alfredo De Angelis are often not that well received, I've hardly ever heard anybody saying that they don't like the valses of De Angelis. The cream of the crop might be the valses recorded by the Carlos Dante and Julio Martel duet but these valses with only Dante as the singer are superb too. "Pampa y cielo" is a more unknown vals and a few times I've played it the ending has come as a suprise to many dancers, therefore I have it as the second song. There's a second version of "Ilusión azul" by De Angelis from 1964 with the singers Juan Carlos Godoy and Roberto Mancini.
De Angelis, Alfredo - TOTW - Todo Tango - tango.info - iTunes Store
Dante, Carlos - TOTW - Todo Tango - tango.info - iTunes Store