Tencent Music Entertainment, which owns China's most popular music apps, has filed for a US IPO seeking funds to develop content and new services.

The IPO is expected to be one of the biggest US listings by a Chinese company this year. 

The music arm of tech giant Tencent Holdings, which plans a Nasdaq listing, set a placeholder amount of $1 billion for registration purposes. Sources said last month it was hoping to raise $2 billion. 

With streaming apps QQ Music, Kugou, Kuwo as well as karaoke app WeSing, Tencent Music is China's largest online music platform boasting more than 800 million monthly active users. 

It is often compared to Spotify Technology, but the Chinese firm offers more in the way of socially interactive services that makes it profitable while its Swedish counterpart is not. 

Music-centric social entertainment services, which include virtual gifts and premium memberships, accounted for just over 70% of the $1.65 billion in revenue it made in 2017, its filing with the US Securities and Exchange Commission said. 

Profit after tax came in at $199m. The filing also showed that only 3.6% of Tencent Music users pay for music. 

For the first half of this year, revenue jumped 92% to $1.3 billion while profits after tax climbed roughly fourfold to $263m. 

By comparison, Spotify, with which it has a cross shareholding deal, lost €90m in the second quarter of this year on revenue of €1.3 billion. 

The number of Tencent Music shares to be sold were not disclosed and potential valuations were unclear.

Spotify is now valued at $31 billion, with shares gaining about 8% since its US debut in April. 

Chinese companies have raised $7.5 billion in US markets so far this year, the biggest amount since 2014, according to Refinitiv data. 

These include video streaming company iQiyi, which raised $2.4 billion, electric vehicle startup Nio which raised $1 billion, and online group discounter Pinduoduo which raised $1.63 billion. 

Tencent Music's IPO comes as the global music industry gets back on track with more listeners streaming music through smartphone apps compared to a few years ago when the market was dominated by pirated music. 

Its apps have over 20 million tracks from both international and domestic music labels, the filing said, while millions of users go to the karaoke app WeSing daily. 

WeSing allows people to have karaoke parties in virtual singing rooms, challenge each other in sing-offs and sing duets with celebrities or other users.