I guess DR WFO, Vixmom and I are the only ones who use dictionaries.
What I've found is that SEQUE is from the Italian for "there follows," ultimately from Latin, sequi. From which we also get the word SEQUEL.
If I didn't use dictionaries I would have no idea what all you clever people were talking about!!
se·gue ( P ) Pronunciation Key (sgw, sgw)
intr.v. se·gued, se·gue·ing, se·gues
Music. To make a transition directly from one section or theme to another.
To move smoothly and unhesitatingly from one state, condition, situation, or element to another: “Daylight segued into dusk” (Susan Dworski).
n.
An act or instance of segueing.
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[From Italian, there follows, third-person sing. present tense of seguire, to follow, from Vulgar Latin *sequere, from Latin sequ. See sekw-1 in Indo-European Roots.]
segue
v : proceed without interruption; in music or talk; "He segued into another discourse"
Source: WordNet ® 2.0, © 2003 Princeton University