Question: This Is Serious is the second solo studio album by a singer best known for what 1985 duet?
Sentence (from "Wisin"): Juan Luis Morera Luna (born December 19, 1978), best known as his stage name Wisin, is a Puerto Rican reggaeton recording artist and record producer, best known as a member of the reggaeton duo Wisin & Yandel.
Relevant evidence: No