Rhythmical lines to convey right sort of literary introduction

• Introductory section
• Short introduction
• Brief introduction
• Introduction or preface
• Preamble

Wiktionary Word definitions in Wiktionary
n. An introduction, preface or preamble.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Proem \Pro"em\, v. t. To preface. [Obs.] --South.

Wikipedia Word definitions in Wikipedia
Proem , whose real name is Richard Bailey, is an American musician. Formerly a resident of Austin, Texas , he now resides in Houston . He has been releasing music since 1999 on labels like Merck , n5MD , and Hydrant. Bailey started experimenting with electronic ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
late 14c., proheme "brief introduction, prelude," from Old French proheme (14c., Modern French proème ), from Latin prooemium, from Greek prooimion "prelude" to anything, especially music and poetry, from pro- "before" (see pro- ) + oimos "way" or oime ...