Synonyms and related words :
a cappella, abbandono, accrescendo, affettuoso, agilmente, agitato, amabile, amoroso, appassionatamente, appassionato, aside, behind the curtain, behind the scenes, behind the veil, between the teeth, brillante, capriccioso, con affetto, con agilita, con agitazione, con amore, covertly, crescendo, decrescendo, diminuendo, dolce, forte, fortissimo, in a corner, in a whisper, in an aside, in darkness, in hidlings, in secret, in the background, in the dark, lamentabile, leggiero, morendo, nobody the wiser, out of earshot, parlando, pianissimo, piano, pizzicato, scherzando, scherzoso, secretly, sordo, spiccato, staccato, stretto, sub rosa, tremolando, tremoloso, trillando, under the breath, under the rose, undercover, underground, with bated breath