Most of these do a very good job of letting the audience know it's about music and about the content. The placement of the types is probably my favorite part, though. Could experiment with illustrated designs like this or with more colour.
Here’s a gorgeous collection of retro-style logos and badges by Minneapolis-based designer Allan Peters. Currently Associate Creative Director at Target’s in-house studio, Peters also runs Peters Design Co. and caters to clients like Nike, ESPN and Johnso