Extracting a Production Hover Preview: Audio, Canvas EQ, and Consent-First Design

The DJ Calendar implemented a zero-dependency audio hover preview for its 99 artist cards using vanilla JavaScript. The system utilizes the iTunes Search API to retrieve free 30-second music previews without requiring authentication or external libraries. To provide a visual experience, the Web Audio API and an analyserNode create a real-time equalizer with eight frequency bars. The design ensures compatibility with hover and touch inputs while strictly adhering to browser autoplay policies and consent-first principles.