By far the band is most noted for the aforementioned "Da Da Da". The song is often given as an example of a song that is extremely repetitive or devoid of creative talent. However, to understand Trio one must understand its context. It was a product of the NDW, or Neue Deutsche Welle, which means "New German Wave". Trio preferred the name Neue Deustche Froehlichkeit, which means "New German Happiness", to describe their music. At that time, as now, popular songs were based on extremely simple structures that were simply polished. Trio's main principle was to take everything that made a popular song, and throw out everything possible but the song itself. For this reason, many of their songs are restricted to drums, guitar, vocals, and often just one or maybe two other instruments; some have no additional instruments at all. Bass was used very infrequently until their later songs. They also used extremely simple chord structures, usually using no more than three chords per song. (This is not simply due to an inability to sing or play well; Remmler's solo career shows that he was capable of much more complicated music, and he played with Kralle during one of his tours, where Kralle demonstrated considerable ability as a guitarist.) Their style was, in a word, minimalism.
The band never got very big outside of Germany, and are largely forgotten even for what in the United States was their one-hit wonder. However, some say that Trio was really popular in its day in Germany. Its most notable songs, other than Da Da Da, are probably "Broken Hearts for You and Me", "Bum Bum" (English version: "Boom Boom"; these two names are pronounced the same way), "Herz ist Trumpf" (English version: "Hearts are Trump"), and "Anna Lassmichrein Lassmichraus" (English version: "Anna Letmein Letmeout").
They produced a movie called "Drei gegen Drei", meaning "Three Against Three". It refers to the plot, where the three people played by Trio kill doubles of themselves as part of a twisted scam to gain riches. However, the movie flopped miserably. The album Whats the Password is the soundtrack, however, drummer Peter Behrens does not perform on any of the songs, despite appearing on the album's cover, as he left the band due to dissatisfaction with Kralle and Remmler over financial matters, leading to the complete breakup of Trio in 1985.