Mexican group Alegres de la Sierra started as a foursome in their native San Blas, Sinaloa, comprising singer/guitarist Inocente Guerrero (aka Chente), singer/songwriter Manuel Guerrero, bassist Guillermo Guerrero, and accordionist Alberto Guerrero. Their breakthrough came after releasing Suerte He Tenido on Infinity Music followed by Del Rancho a la Sierra in October 2001. The success of their well-performed traditional Mexican style known as "campirano" led them to sign with Univision Music Group. The 2002 Alegres Sentimientos was recorded in Los Mochis, Sinaloa, produced by Javier Parra and featured a fifth member, Octavio Guerrero. ~ Drago Bonacich, All Music Guide