Felix Jähn (born 28 August 1994), known professionally as Felix Jaehn, is a German DJ and record producer specialising in tropical house. Jaehn was born in Hamburg and raised in Schönberg, near Wismar in Mecklenburg-Vorpommern, Germany. He took violin lessons at age of 5 and began his DJ career at 16. Jaehn lived in London for a year, where he attended a Point Blank Music College at the age of 17. Afterwards he briefly studied Business Administration at Humboldt-University in Berlin.
In August 2013 he released his debut single "Sommer am Meer". He came to prominence in 2015 through his remix of Jamaican artist OMI's song "Cheerleader". The single was an international hit for him topping the charts in Germany, Austria, Belgium (Flanders and Wallonia), Canada, Mexico, Denmark, France, Ireland, the Netherlands, Slovakia, Sweden, Switzerland, the United Kingdom and the United States. It was also a very popular wedding dance song in the United States. In November 2014 he released the single "Shine". In March 2015 he released the single "Dance with Me". In April 2015, he released a remix of Rufus and Chaka Khan classic "Ain't Nobody" retitled "Ain't Nobody (Loves Me Better)" featuring the vocals of Jasmine Thompson (based on an earlier charting version of the song by Thompson). The remix was an international pan-European hit topping the German Singles Chart. He is now signed to Universal Music. In July 2015 he released the single "Eagle Eyes". In 2017, he collaborated with Mike Williams to release the single "Feel Good" through Spinnin' Records.
In 2015, Jaehn launched Eff, a music duo project made up of German singer Mark Forster (real name Mark Cwiertnia, born 11 January 1984) as vocalist and Jaehn as DJ and producer. The two met in an event in Vienna in 2015. Eff is a reference to Felix and Forster. Their debut single as Eff was "Stimme" that has topped the German Singles Chart for three consecutive weeks, also charting in Austria and Switzerland.