I Will Always Love You — Whitney Houston
“I Will Always Love You” by Whitney Houston is in A major, and the commonly cited lead-vocal range is F#3–G#5 — 26 semitones — which rates hard for an untrained voice.
Long a-cappella phrases with nowhere to hide, then a modulation up to B major for the final chorus that plants the famous belted climax near the top of the soprano break. The verses sit low and conversational, so the voice has to cover more than two octaves of dynamic and emotional ground in under five minutes. Written by Dolly Parton, whose original sits far lower and gentler.
Figures are the commonly cited range and published key for the studio version (Musicnotes original-key arrangement, F#3–G#5 in A major), not lab measurements. No lyrics or melody are reproduced here — this page is about what the song demands of a voice.
A song's written range and its singer's full range are different facts — the library page shows what the artist can do beyond this song.
This song asks for F#3–G#5. Take the free range test and this page will tell you whether it sits inside your voice — and by how much when it does not.
The song library has public-domain songs you can sing along to with live pitch feedback, and guided warmups that extend range.