noun
tempo rubato
Musical term for expressive, flexible tempo; borrowed from Italian.
from Italian
See also: ルバート
この曲はテンポ・ルバートで演奏される。
This piece is performed with tempo rubato.
Standard katakana spelling with interpunct, reflecting the Italian source.
ルバート is the shortened form meaning 'rubato'; テンポ・ルバート explicitly includes 'tempo'.
From Italian 'tempo rubato' (literally 'stolen time').