Amy Winehouse bailed on the St. Lucia Jazz Festival this weekend -- midway through a song!
Amy was attempting to perform "Valerie" when suddenly she stopped singing, stared at the ground for 30 seconds and walked off stage -- leaving her backup singers looking as confused as she does on a regular basis.
Her reps blamed the rain, citing "technical difficulties."
Wino Spares Audience
Walks Outta Gig
5/11/2009 5:50 PM PDT BY TMZ STAFF
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