Used to Know Me by Charli XCX
Used to Know Me by Charli XCX is estimated around G#3 to C5, based on Charli XCX's typical range; song-level verification is pending. Measure your own range free to see how this song fits your voice.
Not sure whether G#3 or C5 is in your voice? Hum a note and the note finder names it, or watch your pitch live with the pitch detector. Both are free and need no account.
Sing Used to Know Me by Charli XCX With Lyrics
Sing along with the lyrics in the karaoke-style video below, then compare the song against your Vocal ID.
Embedded via YouTube. HumMatch does not publish lyrics directly.
Can I sing Used to Know Me at karaoke?
Used to Know Me's 16-semitone span puts it in the top 86% widest ranges in pop songs HumMatch tracks.
Highest and lowest notes
The available song-fit estimate places the low note around G#3 and the high note around C5. If either edge feels tense, try a different key.
Vocal style
A tenor would need to stretch for Used to Know Me's peak note (C5), but it lands comfortably for an alto.
Karaoke difficulty
Karaoke familiarity for Used to Know Me sits at 58/100: more recognizable than the typical pop song HumMatch tracks (median 50).
Who it likely fits
A span in the top 86% widest for pop helps explain Used to Know Me's 50/100 karaoke-difficulty score.
Who may struggle
Transpose Used to Know Me down 3 semitones and the peak note fits a typical tenor's comfortable range.
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Range Guide
Used to Know Me is estimated around G#3 to C5. Compare that with your Vocal ID before choosing the original key. If your comfortable high note is below the song’s hardest section, try a lower key or one of the safer alternatives below.
Perfect For These Voice Types
Comfort Range
Best when your Vocal ID overlaps the main melody without strain.
Best For
Road Trip
Shared playlist pick
Practice
Build confidence
Karaoke Night
Room-friendly planning
Songs like Used to Know Me you can sing
Range labels come from HumMatch’s researched catalog. Take the free vocal range test to see your % on every one of these.
Easier alternatives
If it feels high, try a lower key or start with an easier song from the same artist or genre.
Explore by voice: More songs for G#3-C5 voicesSongs for alto voice
Song fit FAQ
HumMatch estimates Used to Know Me at G#3 to C5 (about 16 semitones), based on Charli XCX's typical performed range; song-level verification is pending. Compare it against your own Vocal ID and test the chorus first.
Across the 2 Charli XCX songs with researched vocal ranges on HumMatch, the sung notes run from G#3 to C#5, about 17 semitones (roughly 1.4 octaves). See the full Charli XCX vocal range guide for voice type and the hardest songs.
Used to Know Me scores 50/100 for karaoke difficulty on HumMatch, which rates as easier. Karaoke familiarity for Used to Know Me sits at 58/100: more recognizable than the typical pop song HumMatch tracks (median 50).
A tenor would need to stretch for Used to Know Me's peak note (C5), but it lands comfortably for an alto.
A span in the top 86% widest for pop helps explain Used to Know Me's 50/100 karaoke-difficulty score.
Used to Know Me may work at karaoke if the original key sits comfortably for you and you know where the risky chorus or low phrases happen.
Hum 3 notes in HumMatch and compare your Vocal ID against Used to Know Me, safer alternatives, and higher-risk picks.
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