Conversation so far:
What was Enrique Iglesias doing between 2002 and 2004?
In 2002, Enrique Iglesias decided to release a fourth Spanish-language album titled Quizás.
How did the album Quizás by Enrique Iglesias do ?
Quizás topped the Billboard Latin Albums Chart, debuting at #1 and shot to #12 on the Billboard 200, the highest position for a Spanish album at the time.
Did the album Quizás by Enrique Iglesias do well abroad?
The album also entered at 200 on the UK album charts, as well as performing well across Latin America going platinum in counties like Mexico and Argentina.
Did Enrique Iglesias release another album during the time period from 2002-2004?
By 2003 Enrique Iglesias released his seventh album, which he called 7, the second to be co-written by Iglesias.

Question: Who co-wrote the album with Iglesias?
Self-contained rewrite: Who co-wrote the album 7 with Enrique Iglesias?