How to load a list of maps with viper?

I have the following config I want to load with viper:

artist:
  name: The Beatles
  albums:
  - name: The White Album
    year: 1968
  - name: Abbey Road
    year: 1969

I can't work out how to load a list of maps. I guess I need to unmarshal just this key, but this code doesn't work:

type Album struct {
    Name string
    Year int
}

type Artist struct {
    Name string
    Albums []Album
}

var artist Artist
viper.UnmarshalKey("artists", &artist)

What am I missing?