Based on the legend of the bean sí, or banshees, faerie-women who serve the same role as funeral keeners.
Traditional legend says the bean sí only sing for the very important deaths (some legends going so far as to list the spefic clans with bean sí) - i think we can all agree, though, that a pop star dying on stage is the sort of death a bean sí wouldn't be able to resist.
As for the wings - the bean sí are occasionally claimed to be shape-shifters. Among their most common forms is the form of a hooded crow. I just couldn't pass up the potential for making her an angel of death.
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