Forró

Forró is a family of related Northeastern Brazilian rhythms — baião, xote, xaxado, arrasta-pé — played by a classic trio of sanfona (button accordion), zabumba (a double-headed bass drum played with mallet on top and stick on bottom), and triangle. Tempos range from 80 BPM (xote) to 130-plus (arrasta-pé). The baião's defining rhythmic figure — short-long, short-long, on the zabumba — gives the genre its lope. Harmony is mostly diatonic with frequent use of the Mixolydian mode; melodies are often pentatonic and sung in pairs of close-harmony voices. Lyrics deal with rural Northeastern life, drought, migration, courtship, and São João celebrations.

Forró was codified by accordionist Luiz Gonzaga in the 1940s and 50s. His 1946 baião "Baião" and 1947 hit "Asa Branca" (about drought migration from Pernambuco) established the trio format and the genre's emotional palette. The June São João festivals across the Northeast are forró's natural calendar event. From the late 1960s, Dominguinhos, Sivuca, and others extended the harmonic language; the 1990s-2000s saw electrified forró universitário scenes in São Paulo and Brasília — bigger bands, drum kits, and a pop crossover audience. Forró remains, alongside samba, one of the two most distinctly Brazilian musical traditions.

The zabumba's two-note short-long figure is the rhythmic engine — once you hear it, you can pick out forró anywhere. The triangle plays a steady eighth-note pattern that fills the high frequencies. Accordion solos use a lot of bends and grace notes; phrases are often pentatonic. Sung passages are usually in parallel thirds or sixths between two voices.

Luiz Gonzaga's "Asa Branca" (1947) is the genre's national anthem in everything but name. For an album, Gonzaga's Forró e Frevo Vol. 1 (1958) or the live De Pé de Serra (1968) compilation.

The folk etymology of "forró" — that it comes from English-speaking British or American railway engineers in the Northeast organizing "for all" dances in the early 20th century — is romantic but disputed; the more likely source is the African-origin word "forrobodó," meaning a rowdy party, which predates British rail construction in the region.