The band was formed in 1961 (as "The Vampires") by Jurandi (drums), Orestes (rhythm guitar), Ernestico (saxophone), and José Paulo (bass), and Cat/Gato (guitar-solo and organ) joined the following year.
Throughout the 1960s, it was one of the most requested bands for concerts and recordings by performers such as Celly Campelo, Ronnie Cord, Roberto Carlos, Sérgio Reis and other stars of the Jovem Guarda.
In 1965, they began to make vocal recordings and released the LP "The Jet Black's", which would highlight the re-recording of the American rock classic "Suzie Q", by Dale Hawkins.
In the same year, the German guitarist went to the United States and the composer and arranger Osvaldo Luís Posi and the keyboardist Renato Mendes join the band.
The band participated in several recordings, playing instrumental songs by various artists of the time, such as Roberto Carlos, Celly Campello, Ronnie Cord, Sérgio Reis, Meire Pavão and others.