Planning a milonga means building 20 to 25 tandas out of a few thousand recordings so that they add up to an evening that feels right. Anyone doing this seriously has so far worked with a mix of music management, DJ software not really adapted to the specific demands of Tango Argentino, and experience carried in their head.

MilongaForge is built for it.

The four areas

Recordings. Your library, enriched with your own ratings, familiarity, danceability and energy, plus a range of categorisations and taxonomies. Import from folders, matching against the discography database; a re-scan shows only the differences.

TandaVault. Build, rate and manage tandas, with suggestions from the database and drag-and-drop.

Cortinas. A pool of your own and lists assembled from it.

Milonga planner. Tandas and cortinas become the evening, with its energy flow projected ahead.

Export as a folder ("packing the case") or as a text and CSV list. Your audio files stay untouched: MilongaForge never writes tags back.

Planned for the beta

Two things are specified and will follow by the beta: a consistency check for tandas that flags breaks in orchestra, style or tempo, and an assessment of the balance of a finished milonga across energy levels and the waves of the evening.

The database behind it

The real work is in the data. MilongaForge draws on a curated discography database of more than 158,000 documents: around 65,000 recordings, 30,900 works, 16,200 people and 750 ensembles, merged from seven public sources, with provenance recorded per field.

Recordings are classified along several dimensions, not just orchestra and year:

Era from the Guardia Vieja to the present, including the subdivisions of the Golden Age
Style family after Stephen Brown, from hard-rhythmic to lyrical
School following the cluster model of Tangology101 and El Espejero
Vocal type: instrumental, estribillo, cantor de orquesta, canción
Tempo feel in five steps, derived from BPM and calibrated against some 35,000 real BPM values, with separate thresholds for tango, vals and milonga
Mood and character as extensible tags

On top of that: 221 ensembles with recorded line-ups (close to 7,000 memberships, 94 per cent of them dated) and curated orchestra phases that trace how the great orchestras changed over the years.

Lyrics, kept properly separate

More than 6,300 lyrics are on file and almost all of them are indexed by content: themes, mood, narrative voice and register. Full text, however, is only stored where that is legally permitted, namely a good 800 public-domain or freely licensed texts. For the roughly 5,500 still in copyright, MilongaForge stores no full text, only the source and a summary written in-house. Where a lyricist's year of death is unknown, the conservative classification applies.

What it deliberately is not

MilongaForge is a planning and management tool, not a live player. There is a preview function, but no crossfading, no mixing, no effects. Nor streaming, downloads or fingerprint-based music recognition.

For playing out, TangoDisplay will shortly be usable as a dedicated fork and remote-controlled from MilongaForge.

Status

The application runs as a desktop app on macOS and is in internal use; versions for web, Windows and Linux are planned, with slight adjustments to the feature set. The server side with discography database and sign-in is already running. It launches as a closed beta from Q3 2026.