He studied organ with Bruckner, starting in 1874, and graduating from Bruckner's organ class in 1877, with honors. Bruckner said that Rott played Bach very well, and even improvised wonderfully (a high compliment since Bruckner himself was a great improviser). Rott was also influenced by the works of Wagner, and even attended the very first Bayreuth Festival in 1876.
a musician of genius ... who died unrecognized and in want on the very threshold of his career. ... What music has lost in him cannot be estimated. Such is the height to which his genius soars in ... [his] Symphony [in E major], which he wrote as 20-year-old youth and makes him ... the Founder of the New Symphony as I see it. To be sure, what he wanted is not quite what he achieved. … But I know where he aims. Indeed, he is so near to my inmost self that he and I seem to me like two fruits from the same tree which the same soil has produced and the same air nourished. He could have meant infinitely much to me and perhaps the two of us would have well-nigh exhausted the content of new time which was breaking out for music.
Thanks to Rott's friends, some of his music manuscripts have survived in the music collection of Vienna's national library. This includes Rott's Symphony in E major, and sketches for a second Symphony that was never finished. The completed symphony is remarkable in the way it anticipates some of Mahler's musical characteristics. In particular the third movement is unnervingly close to Mahler. The Finale includes references to Brahms's First Symphony. Mahler also spoke well of Rott's Lieder, but regrettably, none of those survive. We also know of a Sextet, which Mahler never heard and has also been lost. In his last years, Rott wrote a lot of music, only to destroy what he wrote soon after writing it, saying it was worthless.
Bruckner and Mahler were the first to recognise Rott's talent. Mahler himself included references to Rott's work in his own music. However, in the 20th century, Rott's work was largely forgotten; and only in 1989 was Rott's Symphony in E major finally premiered by the Cincinnati Philharmonia Orchestra under Gerhard Samuel, in a performing edition prepared by Paul Banks. A CD recording followed.
Other recordings of the symphony have since been issued, and other Rott works have been revived sometimes, including his Julius Caesar Overture, Pastoral Overture and Prelude for Orchestra.