RetroMusicPlayer/app/src/main/res/drawable/progress_drawable_vertical.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background">
        <shape android:shape="rectangle">
            <solid android:color="@android:color/transparent" />
        </shape>
    </item>
    <item android:id="@android:id/progress">
        <clip
            android:clipOrientation="vertical"
            android:gravity="bottom">
            <shape>
                <solid
                    android:color="@color/md_deep_purple_A400" />
            </shape>
        </clip>
    </item>
</layer-list>