La Viruta (Dust)

Guardia Vieja (1900-10s) composition.
Compare with Juan Maglio "Pacho" 1912, Luis Petrocelli 1928, D'Arienzo 1936, Di Sarli 1943, Biagi 1948

Jueves (Día De Moda) (Thursday (Trendy Day))

It refers to evening parties on Thursdays at Parque Japonés.
Compare with De Caro 1930, D'Arienzo 1937, Pugliese 1949, Trío Ciriaco Ortiz 1951, Quinteto Pirincho (Canaro) 1952.

El Incendio (Fire)

De Bassi composed this song in 1906 inspired by the sound of the firemen.
Compare with Greco 1912, Biagi 1938, Di Sarli 1940 & 1951.

Independiente Club (Independiente Club)

Dedicated to a soccer club in Buenos Aires. Soccer is #1 sports in Argentina.

Puro Apronte

Apronte in lunfardo means test run of horse racing. 

(turf.) Carrera de ensayo de caballos// (pop.) Ostentación, aspaviento, alarde de capacidad.

Orlando Goñi

Gobbi composed this song 4 years after the death of his childhood friend, Orlando Goñi.  Goñi was one of the best tango pianist who played with and characterized the style of Aníbal Troilo. Goñi was a bohemian and a heavy drinker and passed away at the age of 31.

Racing Club (Racing Club)

Another song dedicated to a soccer club in Buenos Aires.

Chuzas (Spears)

Guardia Vieja composition by Bardi.

Pelele (Fool)

Compare with De Caro, Pugliese.

El Andariego (Restless)

Gobbi's own composition dedicated to his father Alfredo Eusebio Gobbi who traveled the world performing and recording tango.

Si Sos Brujo (If You're Bewitched)

New composition by Pugliese's violinist Balcarce.
It became the title of a documentary about a tango orchestra school in Buenos Aires which Balcarce became the first director.

Compare with Pugliese version.

Fraternal (Fraternal)

New composition by Spitalnik. He was a bandoneonist for D'Agostino, Salgán, Pugliese as well as arranger for Troilo. He composed many modern tangos.

Camandulaje (Gang)

New composition by Gobbi. Camandulaje is a lunfardo meaning a group of friends who would hang out bars, who might even commit crime together.

A Media Luz (In Dimmed Light)

The original recording has lyrics, you can read them here.

Entrador (Daring)

New composition by bandoneonist Demarco, composer of Pata Ancha.
Compare with Pugliese's recording.

Sin Vuelta De Hoja (Undoubted Truth)

"no tener vuelta de hoja" is an expression meaning undoubtedly true.
New composition made by Gobbi's lead bandonist, Alberto Garralda.

Engobbiao (In Gobbi's Style)

New work by Rovira, avant-garde composer (also the composer of A Evaristo Carriego). Rovira played bandoneon in Gobbi's orchestra and admired Gobbi's innovations and dedicated this tango.

Saludos (Greetings)

Pontier composed this song while he was playing bandoneón in Caló's orchestra.