Evanescence singer Amy Lee is reportedly suing her longtime label, Wind-Up Records, for at least $1.5 million over unpaid royalties and other alleged misdeeds, according to TMZ. Lee has also alleged in her lawsuit that the company attempted to sabotage the band's career by assigning them to under-qualified promotion executives who lacked fresh ideas on how to market and promote the group. TMZ did not cite its sources for the report, nor did it obtain any official statements from either the label or Lee, who is seeking over $1.5 million in back royalties. Evanescence is actually no longer part of the Wind-Up roster. Back in November, Wind-Up sold most of its back catalog to the Bicycle Music Company and Concord Music Group, including the entire catalogs of Evanescence, Creed, Seether and others.