Two Fragment activity

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <FrameLayout 
       android:id="@+id/fragment_frame"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
	     android:android:layout_alignParentTop="true"
       android:layout_above="@+id/music_player_frame" />
    
    <FrameLayout
	    android:id="@+id/music_player_frame"
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:layout_alignParentBottom="true" />
    
</RelativeLayout>