Courtney Love and her band, Hole, released a new single titled "Wedding Day" this week. Ironically, the song comes out just as Seattle police made public a note found in the wallet of her late husband, Nirvana's iconic frontman Kurt Cobain, that apparently mocks that very occasion.

"Do you Kurt Cobain take Courtney Michelle Love to be your lawful shredded wife," reads the undated letter, written on stationery from San Francisco's Phoenix Hotel. "Even when she's a b--ch with zits and siphoning all yr [sic] money for doping and whoring…"

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The handwriting appears to match that of the suicide note left at the scene of Cobain's death, in which he praised his wife as a "goddess" who "sweats ambition and empathy."

Yahoo Music obtained a full copy of the letter from Seattle police, which includes one more sentence: "Will you promise to [expletive] her at least once a week, O.K." Taken in its entirety, the letter could easily read as a lovers' joke; however, Love has not yet commented or made any explanation.

Several previously confidential pieces of evidence from the suicide, including a clutch of photos, are just trickling out now, as the world marked the 20th anniversary of his passing.

[Related: Examining Nirvana's Greatest Songs, 20 Years After Cobain's Death]

The newly revealed letter had been removed by police from Cobain's wallet on April 8, 1994, during investigation at his Seattle home following his death from a self-inflicted gunshot. The note was logged as evidence but not released until now.

Cobain and Love's allegedly volatile relationship (the pair married in 1992) has fascinated music fans, with many subscribing to conspiracy theories that Love somehow contributed to Cobain's demise. Those allegations are probed in the new docudrama, "Soaked in Bleach," based on the findings of a private investigator hired by Love in 1994. The film is slated for festival release this year.

The new letter — and its stark contrast to Cobain's positive remarks about Love in his suicide note — no doubt will further stoke those who subscribe to notion of foul play.

Love, who has for years slammed such allegations, does have curious timing when it comes to splashy releases. In addition to the new single from the recently reunited Hole (in which she sings, "Get out of my head…get out of my bed"), the band's multiplatinum and critically acclaimed second album, "Live Through This," famously hit the streets just four days after Cobain's death.

Nirvana was inducted into the Rock and Roll Hall of Fame earlier this month. Love was present and spoke at the ceremony, noting "I just wish Kurt was here to do this."