You might know her voice from her work with Hans Zimmer on the Gladiator soundtrack (she's done many soundtracks since then though). That's just the beginning of the rabbit hole of Gerrard's music career.
If we were to start at the beginning, the obvious place to look is her band, formed in the late 70s i think, called Dead Can Dance. They are a hard band to categorize, but I would probably call them medieval world prog. Even at this early stage of her career, her voice was amazing and she was trying different things. Some of these tunes are absolutely epic. Here's a few of my favourites:
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There's plenty of other highlights to look at too though...
Here's a live performance that gives me the shivers:
and a solo song that's just as good <3
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I hope someone reads this and falls in love like I did