Original: A.B. Quintanilla, the producer, enlisted the participation of David Lee Garza, an accordion player for the title track, "Ven Conmigo".
Simplified: A.B. Quintanilla, III, wrote and produced almost every song on Ven Conmigo. David Lee Garza, the accordion player for the title track, "Ven Conmigo, participated in the writing and production, as well.