Tania Giannouli studied piano (Soloist Diploma with honours and 2nd Prize), Advanced Theory and Composition (Diploma with distinction and 1st Prize), at the Athenaeum and Orfeion conservatories. Her main area of interest is mixed-media, and she is frequently engaged (both as a performer and composer) in projects that combine music with visuals, text and speech. Her music for theatre, film and video has been performed at festivals, galleries, Biennales and museums throughout the world (notably in Greece, France, Germany, Iran, Romania, Bosnia, Italy, Ukraine, Switzerland, Bulgaria, UK, USA, Egypt, Turkey, Indonesia, Spain, Lithuania, Kenya, Morocco, China, Poland, India, Cuba, Mexico, Israel, Ecuador, Colombia, Chile, Argentina and Brazil). She has collaborated with several award-winning video artists and filmmakers, including Istvan Horkay and Marcantonio Lunardi.
Improvisation plays a major part in her musical life. She is a founder member of the groups 4+1 and Schema Ensemble, performing with the latter at the Synch international electronic music festival in 2010. A collaboration with Portuguese wind player and improviser Paulo Chagas resulted in her debut release on Rattle in 2012. Forest Stories received wide international acclaim and was included in many "best of 2013" lists in the Greek music media. In 2014 she formed the Tania Giannouli Ensemble, which has performed widely in Greece (Syros Jazz festival, Onassis Cultural Center, Stavros Niarchos Foundation Cultural Center, Patras International Festival, Fougaro Jazz Festival, Thessaloniki Concert Hall) and with whom she recorded her second album for Rattle, "Transcendence". The album has been included in the "best of 2015" lists, in several music sites, magazines and newspapers - in Greece and abroad.
Tania's compositions have been described as lyrical, inspired, complex, eclectic, and highly original – "intoxicating orchestrations characterised by a European sensibility that evokes the colour of the Mediterranean". She is currently collaborating with one of the most important Greek writers, Evgenios Aranitsis. Her concert music has also been performed by Camerata/Armonia Atenea String Orchestra, Dissonart Ensemble, the Athens Youth Orchestra, and the Galaxy String Quartet.
In August 2016 she participated in the most exciting and demanding site-concert in Greece "634 minutes inside the volcano", where she-together with 14 more musicians- improvised for more than 10 hours inside the crater of Nisyros' active volcano.