In 1995, the Argentine rock trio Soda Stereo returned to the studio after a three-year hiatus to record a brand-new album, Sueño Stereo (Stereo Dream), its seventh and final project. At the time, no one knew this would be the band’s farewell record. Its predecessor, Dynamo, was its most experimental and eclectic work, showcasing a complete turnaround of its new wave style over the previous decade. Sueño Stereo continued this exploration — an alternative album with a noticeable British influence, full of electronic sounds and violins, cellos and violas on many tracks.

The 1990s brought a completely different flow from the ’80s new wave that made Soda Stereo famous. As the alternative rock movement gained popularity in the U.S. and Europe, listeners also increased in Latin America, and Soda Stereo embraced it and made the genre its own. After 10 years of working nonstop, releasing album after album and touring Latin America, the band decided to experiment and created an utterly progressive rock album that fans and other artists still praise 30 years later. 

“Latin American rock DNA is partly based on a tremendous sense of inferiority because it always copied everything that was happening in England and the United States,” Ernesto Lechner, a music journalist from Argentina who has lived in the U.S. since the 1990s, tells Billboard. “Soda Stereo changed that.”

Soda Stereo revolutionized Latin rock history with their new sounds and exploration of diverse musical genres. That style would become the stamp of the lead singer Gustavo Cerati’s artistry, which he would perfect in his first solo album, Bocanada (1999), after Soda Stereo disbanded in 1997. Sueño Stereo, released on June 25, 1995, became the band’s magnum opus.

“Sueño Stereo, for me is, without a doubt, without discussion, Soda’s best album,” Lechner adds. “It’s a glorious record. A psychedelic rock album — electronic rock with moments of ambient music, a very sophisticated thing. It was like a full circle.”

“Is like the final masterpiece, very refined and perfect,” Valeria Agis, editor of Argentine newspaper La Nación, tells Billboard of the set, which in 2012 was ranked fourth by Rolling Stone in its 10 greatest Latin rock albums of all time.

Sueño Stereo’s journey begins with the alternative rock of “Ella Usó Mi Cabeza Como un Revólver,” a melancholy, complex track that presented a string arrangement of viola, violin and cello. A significant change also came with “Disco Eterno” and “Zoom,” two neo-psychedelic pop-rock songs on the set that became classics in the band’s repertoire. 

Further into the album, The Beatles’ influence became apparent with the Britpop tracks “Paseando Por Roma” and “Ojo de la Tormenta.” The set concludes with a surprising shift in the last three songs, instrumentals in which the psychedelic sounds mash up with electronic ones.   

For Soda’s bassist Zeta Bosio, it was the album that allowed him to keep going. A year before the release, his 2-year-old son Tobías had died in a car accident. “That was the album that brought me back to life a little, back to reality,” he tells Billboard. But it was also the album that brought the band back together as a family, allowing them to “become an organism where we could feel what the other was going to do.”

Drummer Charly Alberti felt it too. The album “presents us already at a really high musical level, the three of us,” he adds. “Things would come together really organically.”

Within 15 days of its release, Sueño Stereo went platinum, making it an instant hit in Argentina and all over Latin America. Still, two years later, the band decided to end its 15-year journey together with the farewell tour El Último Concierto (The Last Concert), which culminated in a final show at the Estadio Monumental in Buenos Aires — a performance that left us not only with the live album and DVD of the same name, but also with Cerati’s iconic phrase “Gracias totales” (which literally means “total thanks” but does not translate perfectly into English).

Cerati took the time to focus on his personal projects. In 1999 he released Bocanada, the album he considered his official solo debut, although he had previously released two sets during Soda Stereo’s hiatus before Sueño Stereo. In this context, Bocanada, which means breath or puff, is used metaphorically to symbolize a “new breath of creativity,” as Cerati noted that the songs were coming to him very easily. 

In 2007, Soda Stereo reunited for the Me Verás Volver Tour (You Will See Me Return), which took them all over Latin America and some U.S. states, including Florida and California. The trek began and finished at River Plate, Buenos Aires’ biggest stadium with a capacity of 70,000, where they performed six sold-out nights — five more than in 1997. 

Soda Stereo was planning a few additional shows, even one in Spain, a market they never got to conquer. According to Bosio, the doors were open to doing more with the band. “The music was still intact. It was like we were entering a new stage of maturity and starting to understand things in a different way,” he says. “[But] being Soda Stereo always came with a lot of pressure. Especially for Gustavo, who was the main songwriter.”

In 2010, Cerati suffered a stroke after finishing a concert in Caracas, Venezuela, while promoting his last solo album, Fuerza Natural. He remained in a coma until his death on Sept. 4, 2014, at the age of 55. 

But it was Sueño Stereo that prepared the ground for what came later. Sueño Stereo didn’t mark the end; it was the beginning of a new sound that still echoes 30 years later. 

“One of our goals for this album was to take a subtractive approach,” said Cerati, as quoted in the book Cerati en Primera Persona (Cerati in First Person) by Maitena Aboitiz. “It was like saying: ‘Let’s pull back a bit’ — not to keep a low profile, but because we didn’t need to repeat the same thing over and over.”

Solo, Cerati had the freedom to do whatever he wanted, in his own words. With Soda, the exploration that began with Dynamo and that the band perfected with Sueño Stereo reached its highest point. The outcome was one of their most important pieces and one of rock’s greatest bodies of work, influencing artists all over Latin America and the world for years to come.