After several years developing their solo careers, in 2013, Serrano brothers Juan (piano) and Germán (voice and guitar) managed to get together in Madrid to shape up the band Gentleman Clef. They launched their first EF on 2016. Tow years later, in 2018, they created a single with charity purposes, aiming to donate all of the income obtained to the NGO Entreculturas. This year, they have released their first full-length album. Two brothers, two instruments and a bet for music with alternative acoustic style, with touches of folk and electronic music.