Vocal Skills Hub
Three skill drills in one place. Paste any synced LRC and pick a drill — the analyser rates the song's difficulty, the quiz tests your memory, and the prosody score tells you how singable the lyric actually is.
Questions answered
Frequently asked questions
Yes — all three drills spend no credits. You do need to be signed in, and the LRC you paste is sent to our servers to be analysed rather than processed in your browser. You can paste up to 100,000 characters at a time.
Difficulty rates the song one to five stars — easy, medium, hard or expert — from its words-per-minute, how many distinct words it uses, and how uneven the gaps between lines are. Lyric quiz blanks out a word per line and asks you to fill it in. Prosody scores how singable the writing is, flagging cramped pacing and short breathing gaps.
You get eight rounds, drawn from lines of at least three words and pulled from across the whole song rather than just the opening. A near-miss still counts: an answer is marked correct once it is about 85% of the way to the real word, so one typo will not fail you. The answer key is signed by the server and never sent to your browser, so the answers cannot be read out of the page.
A synced one — every drill reads the [mm:ss.xx] timestamps, so plain lyrics with no timing produce nothing useful. A short song will also fail the quiz: if there are not enough timestamped lines with three or more words in them, the page says so rather than building a thin quiz.
Put the skills to work on a real song — the Manual LRC Maker and the Word-Level Sync editor are where you actually build a file, and the Karaoke Scoring tool grades a full sung take once you know the words.