and the recordings took place throughout the night. The jams in Volume I revolve around canción, mambo, chachachá and conga themes; the longest track, "Opus for Dancing", lasts 10 minutes. Volume II kicks off with "Descarga caliente", a 17-minute montuno jam recorded in 1952 and thus considered the first recorded descarga, while side B includes three jams recorded later: rumba, chachachá and batá (Santería-based). Volume III (1958, red cover) was directed by tresero Niño Rivera and it comprises three montuno tracks combined with swing, guajira and chachachá, plus a guaguancó-comparsa. The only musicians to participate in all three sessions were Alejandro "El Negro" Vivar (trumpet), Emilio Peñalver (tenor saxophone) and Salvador "Bol" Vivar (double bass). Another session entitled Cuban Jam Session with Fajardo took place under the direction of flautist José Fajardo in 1957, but only four tracks could be recorded. The album was finished in Miami in 1964. It was the first descarga album in the charanga format and it features jazz-inspired mambos, chachachás, guajiras and montunos. In 1957, Cachao recorded in the Panart studios his Cuban Jam Sessions in Miniature, short descargas which contrasted with the extended jams in the previous Cuban Jam Session LPs. The album, credited to "Cachao y su ritmo caliente" (Cachao and his hot rhythm), has been described as a "historic recording" with a "classic rhythm section" and "the true salsa musician's bible on record". The same year, Chico O'Farrill directed two descargas, namely "Descarga Número 1" and "Descarga Número 2" with his all-star group, All Stars Cubano, featuring Cachao on bass. O'Farrill's recordings were released by Gema as a single and later included in the multi-artist LP Los mejores músicos de Cuba (1959). Cachao continued to record descarga sessions as a leader between 1958 and 1960: Jam Session with Feeling (Maype), Descarga (Maype), Cuban Music in Jam Session (Bonita) and Descargas con el ritmo de Cachao (Modiner). At the same time, Cachao recorded sessions of traditional danzones for Ernesto Duarte's label Producciones Duarte, yielding two albums that were distributed by Kubaney: Con el ritmo de Cachao (reissued as Camina Juan Pescao) and El gran Cachao (reissued as Cachao y su Típica Vol. 2), featuring former members of Arcaño y sus Maravillas. Nonetheless, later in his career he would record many of these danzones ("Avance Juvenil", "Ahora sí", etc.) in an extended, descarga-like format. Simultaneously with the Panart recordings from Havana, Tito Puente recorded