℗ 2020 Atlantic Recording Corporation for the United States and WEA International Inc
| Released | January 22, 2020 |
| Duration | 4m 26s |
| Record Label | Atlantic Records |
| Genre | Alternative |
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1.1
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Simmer EXPLICIT
Hayley Williams |
4:26 |
"The first word of Williams’ new debut solo single, 'Simmer,' is an enunciated 'rage.' It hangs in the air like a provocation before she finishes: '... is a quiet thing.' There are flashes of anger here—a surprise use of the word 'fucker'—but by its own admission, the song operates at low temperature. There is no distorted, thrashing guitar; instead, it’s accented by watery harp and ominous vocal harmonies."
- Pitchfork
"Simmer" is the debut solo single by American singer-songwriter and Paramore front-woman Hayley Williams. The song was written by Williams, Paramore touring musician Joseph Howard, and guitarist Taylor York.
44.1 kHz / 24-bit PCM – Atlantic Records Studio Masters
| Track title | Peak (dB FS) | RMS (dB FS) | LUFS (integrated) | DR | |
| 1 | Simmer | 0.00 | -9.47 | -7.5 | 5 |