Question: What Colombian singer have the members of Lo-Fi worked with?

Context paragraphs:
Lo-Fi (band): Lo-Fi is an American country band formed in Nashville, TN in 2013.  led by singer/songwriter, Jamie Teachenor(vocals, piano, keyboards) and songwriter & producer, Joe West (guitars, vocals).  Teachenor and West have both been independently successful in the music business, working with artists such as Justin Timberlake, Keith Urban, Luke Bryan, P. Diddy, Steve Earle, Trisha Yearwood, Tim McGraw, Emmylou Harris, Blake Shelton, Shakira, and many more, with combined sales of over 20 million albums.  Their first public performance as Lo-Fi was on May 7, 2013, at the Historic Ryman Auditorium, as part of the sold out show, "Honor Thy Song", honoring late Nashville singer-songwriter and producer, Tim Johnson.

Nuestra Fiesta (song): Nuetra Fiesta is the official song of 2011 FIFA U-20 World Cup, interpreted by Colombian singers Jorge Celedon and Jimmy Zambrano.  The song was performed in the opening ceremony of the cup that took place in Barranquilla and was broadcast for around 160 countries.  During the ceremony, was made a tribute to the recently deceased Colombian singer Joe Arroyo.

Walter Kolm: Walter Kolm (born July 6, 1968) is an influential and well-respected figure in the Latin music industry.  Kolm is currently the CEO of his own music entertainment and management company, W.K. Entertainment.  His company currently represents artists such as Colombian singer Carlos Vives, Colombian sensation Maluma, Silvestre Dangond and recently signed the artist Wisin.  Kolm's company focuses on managing these major artists and developing new talent in the Latin music community.  Formerly, Kolm was the President of Universal Music Latino and Machete Music where he worked alongside major artists such as Paulina Rubio, Enrique Iglesias, Juanes, Wisin & Yandel, and Don Omar.

Rafael Orozco Maestre: Rafael José Orozco Maestre, (March 24, 1954 in Becerril, Cesar – June 11, 1992 in Barranquilla, Atlántico) was a Colombian singer of vallenato music.  He was one of the major representatives of that Colombian popular folk music and lead singer and owner, along fellow accordionist Israel Romero, of the vallenato group Binomio de Oro de América, very popular in Colombia, Mexico and Venezuela.  Orozco was assassinated by gunmen in front of his house on his daughter's 15th birthday party.  It is believed they were hired by an angry drug lord whose wife-or girlfriend-was obsessed with Orozco.  It has been alleged that Orozco had a sentimental relationship with 16 year old Maria Angelica Navarro Ogliasti, identified as the girlfriend of Medellin Cartel hitman Jose Reinaldo Fiallo, who was himself murdered on November 1992 on orders of Pablo Escobar.

Francisco Villarreal: Francisco Villarreal is a Colombian singer.  In 2006, he won the second series of "El factor X", the Colombian edition of "The X Factor".  He beat runner-up Mario Marcelino Macuacé and third-placed Angelo (full name Juan Carlos Ángel), who had been the favourite to win until the date of the final.  It was his second try at being in the finals, after his first try was unsuccessful in the first series in 2005.  In 2006, he was in the 16-25 category and mentored by Marbelle.

La ronca de oro: La ronca de oro (English: "The Voice of Freedom, Helenita Vargas"), is a Colombian telenovela produced by CMO Producciones for Caracol Televisión.  It is based on the life of the Colombian singer Helenita Vargas.

Andy Rivera: Andrés Felipe Rivera Galeano (born October 28, 1994) known professionally as Andy Rivera is a Colombian reggaeton singer, He is the son of popular Colombian singer Jhonny Rivera

Rafael Orozco, el ídolo: Rafael Orozco, el ídolo is a Colombian biographical telenovela produced by Asier Aguilar Amuchastegui for Caracol Televisión.  Based on the life of the Colombian singer of vallenato Rafael Orozco Maestre.  It stars Alejandro Palacio as the titular character.  The series follows the life of Rafael Orozco Maestre in his romantic moments and why he was killed.

Shakira: Shakira Isabel Mebarak Ripoll (] ; ; born 2 February 1977) is a Colombian singer, songwriter, dancer, and record producer.  Born and raised in Barranquilla, she began performing in school, demonstrating Latin American, Arabic, and rock and roll influences and belly dancing abilities.  Shakira's first studio albums, "Magia" and "Peligro", failed to attain commercial success in the 1990s; however, she rose to prominence in Latin America with her major-label debut, "Pies Descalzos" (1996), and her fourth album, "Dónde Están los Ladrones? " (1998).

Chantaje: "Chantaje" (] ; English: "Blackmail") is a song by Colombian singer Shakira, featuring vocals by fellow Colombian singer Maluma.  The song was released as a single to anticipate Shakira's eleventh studio album "El Dorado" (2017) on 28 October 2016 by Ace Entertainment.  The song was written by Shakira, Maluma, Joel Antonio López Castro, Kevin Mauricio Jiménez Londoño and Bryan Snaider Lezcano Chaverra.  It was produced by Shakira, Maluma, Chan "El Genio" (Rude Boyz) and Kevin Jiménez ADG.  Maluma and Shakira previously collaborated on a remix of Carlos Vives' single "La Bicicleta".

Supporting paragraphs: Lo-Fi (band) Shakira
Answer: Shakira