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.”

Whitney’s new, as yet untitled comeback album, is set for a November
release.

In 2006, Tina Brown - the sister of Whitney’s now ex-husband Bobby Brown -
claimed Whitney was living in squalor, and hopelessly addicted to crack
cocaine.

She released photographs to a US magazine showing the star's bathroom
littered with drug paraphernalia, including a crack pipe.