aurora-sharp-desktop/Aurora/Design/Views/MainView/MainView.xaml

<?xml version="1.0" encoding="UTF-8"?>
<ContentPage
     xmlns="http://xamarin.com/schemas/2014/forms"
     xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
     xmlns:views="clr-namespace:Aurora.Design.Views.MainView"
     xmlns:navigation="clr-namespace:Aurora.Design.Components.NavigationMenu"
     xmlns:mp="clr-namespace:Aurora.Design.Components.MediaPlayer"
     x:Class="Aurora.Design.Views.Main.MainView">
    <ContentPage.Resources>
        <StyleSheet
             Source="MainView.css"/>
    </ContentPage.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="28"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="50"/>
        </Grid.RowDefinitions>
        <!--Header-->
        <StackLayout
            x:Name="Header"
            Orientation="Horizontal">
            <Entry Text="Search"/>
        </StackLayout>

        <!--Library Grid-->
        <Grid Grid.Row="1">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="150"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>

            <navigation:NavigationMenu
             Grid.Column="0"
             x:Name="MasterPage"
             Items="{Binding Pages}"/>

            <views:PageContainer
                 Grid.Column="1"
                 Grid.Row="0"
                 x:Name="ContentPage"/>

        </Grid>

        <!--Music Player-->
        <mp:Player
                x:Name="Player"
                Grid.Row="2"
                HorizontalOptions="Center"
                HeightRequest="50"/>
    </Grid>

</ContentPage>