I will give you a detailed analysis of the Illustrator software and share the tutorial on creating a square MP3 icon.
Tutorial sharing:
In the Ai software, create a 800*800 document, select the rounded rectangle tool, draw a rounded corner image, and fill in the color, as shown in the figure.
Then, select the rounded corner image, press ctrl + c, press ctrl + f to paste it, move the top of the rounded corner image up, and fill in the color, as shown in the figure.
Select the rounded rectangle tool, draw a rounded corner image, and add a gradient color, as shown in the following figure.
Select the rounded rectangle tool, draw a rounded corner image, and fill in the color, as shown in the figure.
Select the rounded corner image to the object-path-offset path and fill in the color, as shown in the figure.
Select the rounded corner image to the object-path-offset path and fill in the color, as shown in the figure.
Next, select the rectangle tool, draw two rectangular images, and fill the color, as shown in the figure.
Next, select the elliptical tool, draw multiple positive circles, and fill in the color, as shown in the figure.
The following figure shows the effect.
All right, the above information is the detailed tutorial for creating a square MP3 icon for all the users of Illustrator's software, you can see that the user here is very clear about the rendering method, so you can follow the tutorial to create the MP3 icon.