Reading the other reviews(?), it's hard to get much of a take about the actual music other than incorrectly classifying it as flamenco instead of the nuevo/electro tango that it clearly is, or complaining that an album called "en vivo.." which means "Live" in Spanish is not described as a live album. I am a big fan of traditional and electro-tango, and Spanish/Argentinean Otros Aires is one of the best out there. Unlike Gotan Project from France, Otros Aires sticks more to the traditional Argentine tango root music. Many of the songs, especially on their first album, are based on classic tunes (with smaples of the originals) with an electro beat added. In my opinion their instrumentation is more robust than Gotan Project, with almost no emphasis on Rap and slow chill beats. The Bandoneon (the accordion like instrument) is much more prominent to good effect. Plus, Miguel Di Genova is a really a good vocalist. This album is clearly a live album with an emphasis on there first two studio albums. The sound quality is great and rivals the studio versions. There is just little more emphasis on instrument solos, as you would expect on the live album. If your new to Otros Aires you can really buy these and forego the originals.
To me the highlights are Milonga Sentimental, Sin Rumbo, Rotos En El Raval and Amor Que Se Baila. But I'm biased toward those songs because they are very popular among tango dancers like myself. They have great beats that work really well as milonga-style tunes (a fast form of tango dancing).