Greens Senator Lee Rhiannon has been accused of playing music too loudly -- by people associated with a bar she's feuding with for playing music too loudly.

Rhiannon, whose office is in Sydney's Surry Hills, is at war with a new bar downstairs from her work, called Play Bar. Rhiannon reckons the jazz bar plays music too loudly and it disrupts her staff. She has complained to the City of Sydney Council and wants the bar to install insulation.