Whitney Houston’s voice was almost destroyed by drugs.

Following years of heavy smoking and drug abuse, Whitney’s singing was
reportedly “unrecognizable” when she began recording her new album.
A source told Britain’s Daily Mirror newspaper: “She was smoking a lot and
taking a lot of drugs. Her voice was almost unrecognizable.”
Whitney – once dubbed ‘The Voice’ for her five octave range - was sent for
singing lessons by industry executive Clive Davis and is now back to her
high-note best.
The source added: "Thousands have been shelled out to train her back up to
the original. But now she sounds terrific - she is going to blow everybody
away.”

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