With the assistance of her teachers, she began learning the violin, earning herself a scholarship at The Conservatoire in Blackheath,[2] while exploring her other musical interests such as Bob Marley.

[3] After gaining a BSc degree in Mathematics from the London School of Economics, Mtungwazi became a teacher of Maths and Music[4] During this time she spent many years as a backing singer on other musicians' projects, and steadily built a reputation in the UK for her featured work with an eclectic range of established British artists and bands,[5] including Grace Jones and Bobby McFerrin.

The EP attracted worldwide critical acclaim, including BBC Radio 6 tastemaker Gilles Peterson, who called her "one of the most important singers in the UK right now", and Jamie Cullum, who declared the EP's title song to be "an unbelievable track that will be hard to beat in 2013".

[7] In June 2022 Eska provided the support act for Grace Jones who programmed this year's Meltdown festival at London's Southbank Centre.

[10] On 18 August 2016, it was announced via Billboard that Eska would be one of 18 emerging artists to receive #Momentum funding from the PRS Foundation[11] Speaking on her selection, PRSF said "Eska’s restless inventiveness will continue to be explored further on her sophomore album and in her live performances which have become legendary showcases for this inimitable artist.