During his tenure at the Copa, he was approached by Caliente 105.9 FM's Tony Luna (later program director for Amor 93.1 FM), who offered him a weekend position as a mixer. Sensation took the gig and remained with the station for about a year-and-a-half before it changed formats. Six months after leaving, he was offered a job at New York's most popular Latin music radio station, La Mega 97.9 FM, as the main mixer of a segment called La Mega Mezcla del Mediodía. Sensation soon became the station's most popular DJ. Since that time, he has spun records and mixed to sold-out crowds at Madison Square Garden, Izod Center, Nokia Theater, and the United Palace.
In 2009 he released the mix album Alex Sensation & Friends: La Mega Mezcla on Planet Records, and in 2013 he received an ACE (Association of Latin Entertainment Critics) Award. Sensation has taken his mixes internationally to Puerto Rico, the Dominican Republic, Colombia, Canada, Spain, Italy, Argentina, Ecuador, Mexico, Uruguay, and Aruba. In September 2015 he released the single "Bailame" (featuring Yandel and Shaggy) on Firma through E-One. The following month he signed a record deal with Universal Music Latin Entertainment and collaborated with Gente De Zona on the single "La Mala y la Buena," that reached number 17 on the Hot Latin Songs chart, as did the following year's "Que Va" featuring Ozuna. In March of 2018, "Fantasia" with trap star Bad Bunny, landed at 34 on the list while October's "La Diabla" with Nicky Jam entered the chart at 36. "Pa Lant," a collaboration with Anitta and Luis Fonsi, arrived in 2019. Sensation regularly posts mixes on his enormously popular SoundCloud page. ~ Thom Jurek, Rovi