Just one month after the attacks on the World Trade Center in 2001, Porter joined Michael Jackson to work on the Spanish version benefit single, “What More Can I Give". Porter oversaw the recording, which included Spanish-speaking artists Ricky Martin, Shakira, Alejandro Sanz, Luis Miguel, Christian Castro, Carlos Santana, and others. He also coached the English-language artists to sing in Spanish—members of NSYNC (Justin Timberlake, JC Chasez, Joey Fatone, Lance Bass, Chris Kirkpatrick), Mariah Carey, Celine Dion, and Jackson as well. Proceeds from “What More Can I Give” sales—both English and Spanish versions—went to various September 11 relief efforts.