Since he was very young, ALEX25 had a predilection for music, lights, and flashy things. In the musical aspect, during childhood ALEX25 used to play listening to music in the background, but without any favorite musical preference; it was in his late childhood and early teens that he began to define his musical preferences. ALEX25 became especially interested in electronic music from the age of 12 when he discovered a dance music radio station that had a huge impact on him. ALEX25 developed during his teenage years his musical taste, this being a key stage. That interest led ALEX25 to start making DJ mixes at the age of 15. At 16 years old, ALEX25's fascination with electronic music meant that he was in constant connection with all that musical content, reaffirming his passion. He decided to formalize his hobby in January 2010, by creating the stage name 'ALEX25' which is the result of joining his real name, Alejandro, as "Alex" and the number of his date of birth, November 25. At the same time, he also created the gesture with the hands that show 25. In 2011, at age 17, ALEX25 took the step into music production motivated by creating new music. ALEX25's most important musical influences come from progressive house music that became popular between 2007 and 2012, as well as many songs from before this period. Composing, ALEX25 has a preference for pleasant, defined, tonal sounds, female voices, synthesizers, violins, pianos, arpeggios, simple structures, and catchy lyrics.