LOS ANGELES (Reuters) – Florence Welch, lead singer of the British band Florence + The Machine, has suffered a vocal injury and canceled two European festival performances, the singer said on Wednesday. "Yes it's true … it finally happened, I've lost my voice," Welch posted on her official Twitter feed. "I've sustained a vocal injury and been told I cannot sing for a week … seriously I felt something snap, it was very frightening." Welch, 25, canceled a performance for Thursday at Spain's Benicassim festival and one for Saturday at Portugal's Optimus Alive! festival. …