- Always-on-top overlay: lyrics stay visible across apps so you can multitask. - Line-by-line instant translation: translations appear under each line. - Sync & manual control: automatic track detection plus keyboard navigation, padlock sync, and seek-to-line. - Lightweight, desktop-first design: small footprint, compact app bar sizing, and unobtrusive UI. - Keyboard-driven workflow: quick shortcuts for play/pause, next/prev and info panel.