Other Uses
There are four parts in Barbershop harmony: bass, baritone, lead, and tenor (lowest to highest), with "tenor" referring to the highest part. The tenor generally sings in falsetto voice, corresponding roughly to the countertenor in classical music, and harmonizes above the lead, who sings the melody. The barbershop tenor range is B♭-below-middle C (B♭3) to D-above-high C (D5), though it is written an octave lower. The "lead" in barbershop music is equivalent to the normal tenor range.
In bluegrass music, the melody line is called the lead. Tenor is sung an interval of a third above the lead. Baritone is the fifth of the scale that has the lead as a tonic, and may be sung below the lead, or even above the lead (and the tenor), in which case it is called "high baritone."
Though strictly not musical, the Muslim call to prayer (azan) is always chanted by tenors, possibly due to the highly placed resonance of the tenor voice which allows it to be heard from a longer distance than baritones or basses during pre-amplification times. Some such chanters (termed bilals) may modulate up to E3 in certain passages, while incorporating a distinctive Middle-Eastern coloratura run.
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