keening, tremulous, toneless, whispery, trembly, plaintive, guttural, breathy, warble, tremolos, croaky, basso profundo, melismatic, raspy, fluttery, reedy, twanging, rasp, staccatos, stentorian, flutelike, basso, throaty, descant, trilling, timbre, quivering, songful, pianissimo, pizzicato, vibrato, quivery, declamatory, wails, mellifluous, cadenced, sopranino, mournful, adenoidal, plangent, fortissimo, shrilling, dulcet, diminuendo, songlike, tunelessly, glissandos, seraphic, nasal twang, unmodulated, crotchets, melodiously, huskiness, soubrette, soulfully, percussively, mezza voce, tessitura, melancholy, lilting, girlish, falsettos, yelps, yowl, trebly, sibilant, tintinnabulation, chromaticism, pensiveness, inaudibly, sandpapery, cor anglais, contrabassoon, polytonal, monotone, passagework, sonorous, tinkly, mewl, saturnine, nasality, tinkles, alto, affectless, intonation, spinto, lugubrious, nervily, tinging, piercingly, honeyed, tympani, scat singing, altissimo, obbligato, trembling, ruefulness, cavatina, decrescendo, ostinato, softly, incantatory, singsong, accentuation, adhesiveness, bumps, burnish, cadence, chattering, chirping, creaking, curving, drawl, gratification, hairline, hum, humming, humps, inflection, inflections, inflexions, hoarse, shrill, highpitched, pitched, melodious, strangled, drawling, louder, muffled, inaudible, loud, falsetto

otus asio, quaveringly, screech owl

unsteady