Hot Line by The Sylvers
Hot Line by The Sylvers is estimated around D#4 to A#4, based on The Sylvers's typical range; song-level verification is pending. Measure your own range free to see how this song fits your voice.
Not sure whether D#4 or A#4 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.
Practice before you pick it.
We do not publish lyrics directly. Find a karaoke version on YouTube, then come back to compare the song against your Vocal ID.
Can I sing Hot Line at karaoke?
Hot Line covers 7 semitones top to bottom, good for a top-11% placement among Disco songs HumMatch tracks.
Highest and lowest notes
The available song-fit estimate places the low note around D#4 and the high note around A#4. If either edge feels tense, try a different key.
Vocal style
A#4 is Hot Line's ceiling: out of a tenor's comfort zone, but well within an alto's.
Karaoke difficulty
That top-11%-widest span for Disco is a big part of why Hot Line scores 50/100 for karaoke difficulty.
Who it likely fits
Dropping 1 semitone would bring Hot Line's peak note inside a typical tenor's comfortable range.
Who may struggle
HumMatch is still gathering enough data on this song for a deeper breakdown.
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Range Guide
Hot Line is estimated around D#4 to A#4. 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 Hot Line 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 A#3-A#4 voicesSongs for alto voice
Song fit FAQ
HumMatch estimates Hot Line at D#4 to A#4 (about 7 semitones), based on The Sylvers's typical performed range; song-level verification is pending. Compare it against your own Vocal ID and test the chorus first.
Across the 1 The Sylvers song with researched vocal ranges on HumMatch, the sung notes run from C4 to D#5, about 15 semitones (roughly 1.3 octaves). See the full The Sylvers vocal range guide for voice type and the hardest songs.
Hot Line scores 50/100 for karaoke difficulty on HumMatch, which rates as easier. That top-11%-widest span for Disco is a big part of why Hot Line scores 50/100 for karaoke difficulty.
A#4 is Hot Line's ceiling: out of a tenor's comfort zone, but well within an alto's.
Dropping 1 semitone would bring Hot Line's peak note inside a typical tenor's comfortable range.
Hot Line 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 Hot Line, safer alternatives, and higher-risk picks.
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