Ilusión (English: Illusion) is the fourth album by Colombian singer-songwriter Fonseca, released by Sony Music on September 30, 2011.

The songs are mostly inspired by the different feelings related to the enthusiasm and joy of love, and musically the album is Latin Pop influenced Tropipop.

The album's lead single, "Desde Que No Estás" was released August 22, 2011, only in some Latin American countries, and reached the top ten in these.

Fonseca told to the newspaper El Espectador that with the album he feels more toned with the current sound and that paternity influenced in the music.

[3] The Mexican duo Jesse y Joy is the guest artist, their collaboration appear on the album, featuring in the fourth track "Soledad".

[6] On the review of Luis Nuñez of El Riviguer wrote that "This album is an interesting fusion of Tropical pop according to the categorization that the critics give to this little explored subgenre, recognizing its great influences of Colombian pop (tropipop) ranging from the vallenato music until traditional joropo".

[7] At the Chicago Sun-Times, the journalist Laura Emerick selected the album Ilusión as among the 10 best Latin music albums of 2012, writing: "Moving away from the shadow of early influence Carlos Vives, a fellow Colombian vallenato revivalist, the singer-songwriter conjures up more Latin pop confections, especially the dreamy lead track (Eres Mi Sueño)".

[8] In September 2011 Fonseca offered a benefic concert in Bogotá, that tried to gather money to finance a project of rebuilding schools affected by the last rainy season, in Colombia.

[11] The date scheduled for Costa Rica was postponed for September 30[12] due to locking on the road in Nicaragua, because of a Salvadoran strike.

[15] "Eres Mi Sueño", was released first on November 30, 2011 in Colombia[16] and more late in United States on June 19, 2012.