b. Efrain Rivera Castillo, 1925, Mayagüez, Puerto Rico, d. 12 March 1978, Manhattan, NEW YORK, USA. Band innovator, vocalist, composer, multi-instrumentalist Rivera was a pioneer from the trombone front-line in Latin music; some state he was the pioneer, whereas others preserve that Eddie Palmieri was the originator. Nevertheless, it is most likely their record maker at that time, Al Santiago (creator of Alegre Information), who deserves the credit. Whoever it had been, the all trombone audio influenced music group market leaders like Willie Colón among others, and it has been referred to as the sign of metropolitan salsa. Rivera was referred to as ‘Un Rey del Trabalengua’ (The Tongue Twister Ruler) because ‘… his improvised quips would pleasure fans along with his obvious enunciation of rhymes and alliterations conjured up at bullet rate and flawlessly weaved within the timing and conditions from the music’ (estimate from Aurora Flores, 1978). Rivera was usually closely from the plena and bomba types of his isle of delivery. His father, Ram memoryón Rivera Alers, published well-known plenas. Rivera started his professional profession at age 16 and became a member of the music group of William Manzano. He was also a specialist baseball participant and used Los Indios in Mayagüez between 1943 and 1945. In the first 50s, he relocated to the united states with the music group of Héctor Pellot, that was later on led by Moncho Leña. After Leña disbanded, he structured his own music group with its popular trombone front-line. His debut around the Alegre Information label, Que Gente Averigua, included the delicious instrumental ‘Lluvia Con Nieve’ (Rainfall With Snow), which Mon made up himself. No musician credits received around the sleeve, nevertheless the recording’s maker, Al Santiago, exposed a stellar line-up have been put together for the documenting, including Charlie Palmieri (piano, eight songs), Eddie Palmieri (piano, two songs), Kako (timbales), Barry Rogers, Tag Weinstein and Manolin Pazo (trombones). Rivera experienced a big strike using the self-penned ‘Karacatis-Ki’, a plena dengue, that was the name tabs on his first quantity on Ansonia Information. Rivera’s 1975 cooperation with Willie Colón, There Runs The Community/Se Chavó Un Vecindario, helped connect him with younger Latino viewers. He organized the hit monitor, the plena ‘Ya Llego’. An extraordinary line-up was congregated for the program, including Lewis Kahn and Jose Rodrigues (trombones), Papo Lucca (piano), Kako (timbales and conga), Rubén Cutting blades and Héctor Lavoe (chorus). ‘Mon had not been immortal and dropped victim towards the vices of lifestyle. However in his realization, he battled and became free from the ‘monkey’ that sucked at his lifeline’, had written Aurora Flores, for the reason that typically oblique way within accounts on Latin performers. He passed away, in his Manhattan home on 12 March 1978, from a coronary attack. The posthumously released Forever, was made by Johnny Pacheco. Furthermore to performing business lead vocals and composing one monitor, Rivera shared organizing tasks with Colón and Ernie Agosto.