Quién Dijo Ayer (English: Who Said Yesterday) is a compilation album released by Guatemalan singer-songwriter Ricardo Arjona on 21 August 2007. Dan Warner and Lee Levin co-produced the album with Arjona and Puerto Rican singer-songwriter Tommy Torres. It was recorded in the United States, Mexico, Italy and Argentina, and is the last album Arjona released under the Sony Music Entertainment label before signing with Warner Music Group. It is Arjona's first compilation to include new material in the form of re-recorded versions of past hits in different musical genres from the original recordings, featuring guest artists such as Marc Anthony, Marta Sánchez and Mexican ska band Panteón Rococó, among others.