music-glossary: feathered beam

 
 1.124 feathered beam
 ====================
 
 ES: barra progresiva, I: travatura convergente/divergente, F: ligature
 en soufflet, lien de croches en soufflet, D: gespreizter Balken, NL: ?,
 DK: ?, S: ?, FI: kiilapalkki.
 
    A type of beam used to indicate that a small group of notes should be
 played at an increasing or decreasing tempo – depending on the direction
 of ‘feathering’ – but without changing the overall tempo of the piece.
 
 
 See also
 ........
 
    Internals Reference: See(lilypond-notation)Manual beams