"eager voice" is a correct and usable part of a sentence in written English.
You can use it to describe someone who is speaking in an enthusiastic or excited tone of voice. For example: "She answered the phone with an eager voice, ready to hear the good news."
Under Tilson Thomas's relaxed baton, the 70-piece orchestra managed to speak at times as though with one eager voice; the Intermezzo had airborne grace, and the Gypsy Rondo – for which Schoenberg did permit himself some licence – bowled boisterously along, powered by trombones, timpani, and high metal percussion.
Her thin, eager voice singing the Burt Bacharach-Hal David hit "The Look of Love" is as colorless as that of Charles Foster Kane's second wife, Susan Alexander, whom Kane pushed to be an opera star, singing an aria from the fictional "Salammbo," in "Citizen Kane".
Entertainment Weekly gave the book a "B+", writing that "Malala's bravely eager voice can seem a little thin here, in I Am Malala, likely thanks to her co-writer, but her powerful message remains undiluted".
Amplified, eager voices downstairs proclaimed that Lynne had been watching television news an hour ago, before she panicked.
Although Addams dismissed the "gawkers" who came to see the Devil Baby as a sensationalist seeking mob, she wanted to understand the older women who had perpetuated the myth: "Whenever I heard the high eager voices of old women, I was irresistibly interested and left anything I might be doing in order to listen to them" (LRW 9).
Audience members were also eager to voice opinions on Cardiff council's planning department.
Democrats were eager to voice their support for Mr. Perez, who, if confirmed would be the only Hispanic member of the cabinet.
But according to one who knew both, talking with Yeats was strangely like talking with Hitler, an "eager, nervy voice running up and down... the emotional scales".
He slips effortlessly into the eager, friendless voice of a man who is every bit as glamorous and dynamic as his name suggests.
Australia's PM is eager to voice his concerns about the investigation into the shooting down of a Malaysian passenger plane in July, killing all 298 on board.
Our citizen photojournalists, who sent in over a thousand pictures from Tea Parties across the country, had an eye for children eager to voice their political grievances.
