Originally Posted by Skaligojurah

Or you can blame Black Sabbath for inventing the genre which was renamed 'metal', 'stoner rock', 'doom rock', and 'grunge' depending on the time period, and location. Or, in Nirvana's case, you can call it 'Melvins'.

Calling 'Red' A grunge song is ridiculous, anyway. The only similarity is the fact it uses distorted guitar.