Born into a musical family, Lilla Horti commenced her music studies at the arts school in Csongrád, studying voice under her father, and later flute under Tímea Dulics. At the Szeged Conservatory, she started out studying flute but later switched to studying voice under Tímea Zita Somogyvári. She has been a student of Ingrid Kertesi's at the Ferenc Liszt Academy of Music since 2011.
In the summer of 2012, she made her début on the opera stage in the Szeged Open-Air Festival's production of Mascagni's Cavalleria rusticana and Leoncavallo's Pagliacci. Her first role as a soloist was as the First Lady in Die Zauberflöte, during the 2013/14 season.
At the Hungarian State Opera, she has sung the roles of Masha (in The Queen of Spades) and Mimì (in La bohème).

Competitions and awards:
Junior Prima Award, music category (2017)
Second International Éva Marton Singing Competition – second prize (2016)
Eight National and Third International József Simándy Singing Competition – second prize and a special prizes in Category II (2013)
Seventh National Jenő Ádám Song Competition – first prize and a special prize (2011)
Seventh National and Second International József Simándy Singing Competition – second prize and a special prize in Category I (2011)
Fourth National László Varga Music School Singing Competition – third prize (2011)
11th National Zoltán Kodály solfège, duet-singing and folk song-sing competition – second prize in the duet singing category (2011)