Sivan Keren was born in Israel. She began her music studies playing the flute, graduating in 2009. She began her vocal studies in 2012 with Professor Tamar Rachum, and completed her Bachelor and Master degree in Prof. Rachum's class in the Buchman-Mehta School of Music at the Tel Aviv University (2013-2019)

Sivan Keren sang various operatic and oratorio roles, including: Erste Dame in Die Zauberflöte (2022), Soprano solo in Dvořák's Stabat Mater (2022), Contessa Almaviva in Le nozze di Figaro (2022), Gretel in Hänsel und Gretel (2021), Giunone in La Calisto (2021), Ah, perfido (2021), Elvira in L'italiana in Algeri (2021), Ida in Die Fledermaus (2021), Mimì in La Bohème (by Puccini and by Leoncavallo) (2020), Suor Zelatrice in Suor Angelica (2019), Sister Catherine in Dead Man Walking (2019), Dama disincantata in La liberazione di Ruggiero dall'isola d'Alcina (2019), Clorinda in La Cenerentola (2019), Gianetta in L'elisir d'amore (2019), Elettra in Idomeneo (2019), Laetitia in The Old Maid and the Thief (2019), Monica in The Medium (2019), Rosalinde in Die Fledermaus (2018), Soprano solo in  Faure's Requiem (2018), Cleopatra in Giulio Cesare in Egitto (2017), Soprano solo in For the Fallen/Elgar (2017), Irina in Albert/world premiere by Zorman (2017), Marzelline in Fidelio (2017), Soprano solo in Mendelssohn's Psalms 42 (2016) and many more. She also sings many Lieder and contemporary classical music works. Sivan Keren sang as soloist with Jerusalem Baroque Orchestra (2020-2021), The Jerusalem Symphony orchestra (2021), The Israel Symphony orchestra Rishon Lezion (2020), The Israel Sinfonietta Beer Sheva Orchestra (2018), The Netanya Kibbutz Orchestra (2018) and the BMSM Symphony Orchestra (2016)

Sivan Keren won the first prize in the Aviv Competitions of the America Israel Cultural Foundation in 2018: both the main prize and the Israeli vocal composition prize. She also won the third prize in Buchman Mehta School on Music vocal competition (2017 and 2018). She won excellence scholarships every year of her studies (2013-2019). She was also a semi-finalist in Riccardo Zandonai Concorso lirico in Italy (2018), and a semi-finalist in Hilde Zadek Voice Competition in Vienna, Austria (2019) and a semi-finalist in Vox Artis competition in Romania (2019), and was selected to participate in Festival der jungen Stimmen with concerts in Sigriswill, Bern, Basel, Zürich and Wiesbaden (2019)

Sivan Keren is a graduate of Meitar Opera Studio (YAP of the Israeli Opera), and nowdays sings as a soloist of the Israeli Opera.