Introduced in the Operation Shattered Web case, Music Box was released in late 2019. It can be obtained through case drops, trade-ups, and community market sales.

The skin displays a vibrant design resembling a colorful, whimsical music box, with swirling patterns and cheerful illustrations primarily in red, gold, and white hues.

Music Box is well-loved for its playful and bright appearance. It has a niche but dedicated following and is considered a collectible due to its unique look.