I'll apply a Quick Edit to add a drop shadow to the specified div element in the app/page.tsx file. Here's the change:

This change does the following:

1. Adds the Tailwind CSS class shadow-lg to provide a large drop shadow.
2. Adds an additional custom boxShadow property to the inline style to enhance the shadow effect.

The shadow-lg class provides a default drop shadow, while the custom boxShadow adds a slightly larger and more pronounced shadow. This combination will create a noticeable drop shadow effect, making the audio player component stand out more against the background.

The shadow values used (0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05)) create a subtle, layered shadow that gives a sense of elevation to the component. You can adjust these values if you want a stronger or lighter shadow effect.

I'll modify the code to add more contrast to the background colors and implement a slow rotation effect for the background. Here's the updated version of the app/page.tsx file:

These changes will:

1. Create a more contrasting gradient by darkening the first color and lightening the last color in the gradient.
2. Add a slow rotation effect to the background using the new rotate keyframe animation.
3. Use an additional div to create a larger background that rotates, giving a more immersive effect.
4. Add a semi-transparent background to the audio player container with a blur effect to ensure readability against the rotating background.

The result will be a more visually dynamic background with higher contrast, slowly rotating to create an engaging effect. The audio player itself will stand out more clearly against this animated background.