She's the American songstress who has drawn comparisons to Katy Perry with her breakthrough hit Sweet But Psycho.

But Ava Max, 25, has revealed that she- unlike the Californian pop singer-shies away from writing songs about the party lifestyle and hasn't touched a drop of alcohol in a year.

'Drinking and partying never appealed to me in lyrics - they don't have a lot of meaning behind them,' she told Sydney Confidential on Monday.

'They don't have meaning': Ava Max, 25, says she hates writing songs about partying and drinking and hasn't touched a drop of alcohol in a year

The 25-year-old - known for her unique half-bob hair - spoke about her songwriting preferences ahead of playing Sydney's Nova Red Room on Monday night.

'It is sometimes fun when you party and listen to those fun songs but they don’t have a lot of meaning behind them.'

'I wanted to add a meaning to a fun song, which is hard to do.'

Music with a message: 'Drinking and partying never appealed to me in lyrics - they don't have a lot of meaning behind them,' she told Sydney Confidential on Monday

Ava has yet to release her first studio album, but has promised to share her new music with her fans this year.

'I can't wait to share all this music I've been working on for you.

'I also can't wait for you to grow with me, and for us to learn together along the way,' she wrote in an Instagram post in January.

New music: Ava has yet to release her first studio album, but has promised to share her new music with her fans this year

Her chart-topping hit has courted controversy for its music video - which features an axe-wielding woman who is obsessed with a man she sees kissing another woman.

The UK's Zero Suicide Alliance called the video 'a package that helps to encourage and support stigma' and said it underlined 'negative perceptions of mental health'.

The video shows a woman drugging a man and terrorising him with a variety of weapons.

Sweet But Psycho has been streamed more than 750 million times worldwide and has earned Double Platinum status for its sales in Australia.