"4/24 Montage of Heck will open in Los Angeles, Seattle, and New York City," tweeted Morgen, who oversaw the project with executive producer - and Cobain's daughter - Frances Bean.

Morgen has also announced a series of international cinema debuts, including Germany, Austria and Switzerland (April 9), the UK (April 10), Sweden (April 27), Italy, Australia and New Zealand (April 30).