CucumberSpace [1] filed a request to merge yandexmusic [2] into yandex-music [3]:
Package was renamed to yandex-music [1] https://aur.archlinux.org/account/CucumberSpace/ [2] https://aur.archlinux.org/pkgbase/yandexmusic/ [3] https://aur.archlinux.org/pkgbase/yandex-music/