Complex sentence: Olivero was chosen as one of Rubio's top 4 boys after singing Selena's "Dreaming of You" in the Four Chair Challenge and made it into the Top 12 after singing "Maria Maria" by Santana in the first live show.
Split into simpler sentences: Olivero was chosen as one of Rubio's top 4 boys after singing Selena's "Dreaming of You" in the Four Chair Challenge. He made it into the Top 12 after singing "Maria Maria" by Santana in the first live show.