'keen voice' is correct and usable in written English.
You can use it to describe a voice with a high pitch that is sharp or eager. For example: She replied to the question with a keen voice, determined to impress.
Exene Cervenka's keening voice and angular poetry were at the heart of the Los Angeles punk band X.
Each night at home, Pa was wracked with dizziness and palpitations; in the wee hours, he would wail in a keening voice, "Antioxidaaaaaaants . . .
And whenever I listen to that high, keening voice I used to have, I don't know if I like it.
The keening voice of the Malian singer Salif Keita wafts from Merkato 55, a five-month-old pan-African restaurant just down the block.
Yet Davie's sentiment draws its force from a yearning that is more than rhetorical, and that Larkin and Amis gave perhaps keenest voice of all to.
It was as if he had extrapolated the elusive beauty of his keening voice and puzzling lyrics into the arrangements themselves, weaving a ravishing tapestry of folk, jazz, ambient, electronica and MOR.
Ms. Thornton had a husky, keening voice with a muscly vibrato; she was a vibrant performer with a caustic sense of humor, and she was particularly gifted at coaxing harmonic complexity and emotion out of the blues.
But the keening voice of ancient Ireland can also be heard, once it comes to light that the dead man had business at the Carra Fields, a Stone Age archaeological site steeped in blood and more recently plagued by looters.
Butler frequently establishes a song with a bass line — the guitar is secondary in Arcade Fire's generous arsenal — and a wobbly, keening voice that recalls Ian McCulloch, of Echo & the Bunnymen, especially when it leaps up in pitch and begins to break.
That keening voice you hear in THE SCARECROW (Little, Brown, $27.99) belongs to a Michael Connelly you may not know — not the best-selling author riding high on his 20th novel, but the newspaper guy who started out covering the crime beat for the South Florida Sun-Sentinel and went on to become a top crime reporter for The Los Angeles Times.
