How to show count of relationship from a belongs to many through relationship?

Tables\Columns\TextColumn::make('artists_count')
    ->getStateUsing(function (Playlist $record): int {
        return $record->songs->map(function (Song $song) {
            return $song->artists()->pluck('artists.id');
        })->unique()->flatten()->count();
    })
    ->sortable()
,

Tables\Columns\TextColumn::make('artists_count')
    ->counts('artists')
    ->sortable()
,