"Smokey Day"

Recently, I was thinking about "Smokey Day" and noticed some features in two of the lines.  In comparing the two versions (one sung by Rod Argent with backing by the band that would become Argent and one sung by Colin Blunstone on his One Year album), I discovered that there are slight differences in the two lines I was considering.  In the pre-Argent version, the lines are "Dulcet vesper voices / Calling gently for the night," sung to a melody something like:

but in the Colin Blunstone version, the lines are "Dulcet vesper voices / Calling gently through the night," sung to a melody something like:

These are small differences, but I'd never noticed them.

All of the words in the line "Dulcet vesper voices" come from Latin (dulcis, vespere, and vox [gen. vocis]), so there's a sort of linguistic coherence to the line.  Additionally, each word is two syllables (although Blunstone sings "vesper" with a melisma, so it has three syllables), and the first syllable of each word falls on a downbeat, so there's a sense of balance.

The line "Calling gently for/through the night" is sung to a melody that, despite some accidentals, is entirely conjunct (just three pitches: D#, C#, and C), and these small intervals match the adverb "gently."  (It's the same feature that I recently noted in "Hung up on a Dream.")