in the beginning of the 1960s, the popularity gained by rock music brought changes. latin bands began to switch their styles and started playing more salsa and boogaloo, which was more attractive to latin youth of the day. rodríguez then tried his luck with boleros and recorded various albums for the united artists label, spawning various hit songs such as "inolvidable", composed by julio gutiérrez, and "en la soledad", composed by puchi balseiro. "inolvidable" sold over a million and a half copies world-wide in 1963. he also produced records for other groups, such as los hispanos and los montemar.