On 14 March 2018, Gerrard performed a concert at the National Palace of Culture in Sofia with Genesis Orchestra, under the conduction of Yordan Kamdzhalov, entitled Symphony of Sorrowful Songs by Henryk Górecki. During the concert, she also sang her own songs from both her solo career and those of Dead Can Dance. Kamdzhalov said of the event, "for me personally, this is more than a dream come true. I cannot think of a better combination than Gerrard-Gorecki-Kamdzhalov in Gorecki's Symphony of Sorrowful Songs". In 2018, she appeared on "BooCheeMish", a collaborative album with the Mystery of Bulgarian Voices, with whom she co-wrote some of the songs. Gerrard emphasized that she—and her collaborators—had strived not to impair the women's essential sound, she said "we're walking toward them, not the other way around"—adding, "if anybody is changed by this, it's me'. The album, that combines the choir's folkloric harmonies and a multitude of instruments, was arranged and produced by Petar Dundakov. Also in 2018, Gerrard teamed with solo percussionist David Kuckhermann to compose and record an album, "Hiraeth", released on 6 August 2018.