Just when you thought one of the biggest and most drawn-out battles on the internet was done and dusted and that T-Series had comfortably taken the crown as YouTube's largest channel, PewDiePie released a diss track.

The two channels have been neck-and-neck for months, with both etching up over the 92-million-subscriber mark. You can watch the count in real time here.

It looked like it was all over yesterday when PewDiePie (real name Felix Kjellberg) admitted defeat to the Indian music channel with a satire video titled Congratulations featuring fellow YouTubers Roomie (Joel Berghult) and Boyinaband (David Brown).

The disingenuous title sets the listener up before laying down sarcasm in the first verse:

"Yes you did it, very nice, and all it took was a massive corporate entity with every song in Bollywood."

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The song accuses T-Series of pirating songs and colluding with the mafia

The track lists a series of gripes against T-Series, accusing the company of "selling pirated songs" and citing a Wikipedia page as the source.

One verse sarcastically mentions connections with the mafia:

I'm certain that you haven't had collusions with the mafia, for legal reasons, that's a joke.

PewDiePie holds up a Wikipedia page that accuses T-Series of pirating Bollywood songs. ( ABC News )

And in another verse, PewDiePie brandishes what looks like a cease and desist letter.

I got a letter in the post, hmm, what is this? T-Series saying "Cease and desist" Had a problem with me telling them to hold their defecation But let me educate you, silly, that's not defamation (Woo) T-Series can eat a d*** (Still not defamation)

PewDiePie has previously faced backlash for his controversial videos

In 2017, the Wall Street Journal drew attention to multiple videos in which the YouTube personality had used Nazi imagery and anti-Semitic language.

In one video, two men were filmed holding a sign with the words "Death to All Jews". Other videos included swastikas and Nazi salutes.

Afterwards, YouTube cancelled his YouTube Red (now YouTube Premium) show Scare PewDiePie and removed his channel from the Google Preferred ad service.

Disney-owned Maker Studios (now Disney Digital Network), the channel which made Scare PewDiePie, also cut ties with him, saying "he clearly went too far in this case".

In a Tumblr post, PewDiePie wrote that he did not support hate groups:

"I think of the content that I create as entertainment, and not a place for any serious political commentary. I know my audience understand that and that is why they come to my channel. Though this was not my intention, I understand that these jokes were ultimately offensive."

So what effect did the song have?

On Monday T-Series was at least 10,000 subscribers ahead of PewDiePie.

But since it was uploaded, the Congratulations video has been viewed more than 19.6 million times.

Its popularity encouraged PewDiePie fans, with his subscriber count surging ahead of T-Series by more than 100,000.

As for T-Series?

Bhushan Kumar recently urged people to subscribe to further his father's dream. ( Supplied: CC )

In December, chairman of T-Series Bhushan Kumar said he was really not bothered about the race.

"I don't even know why PewDiePie is taking this so seriously… We are not competing with him."

But by March, Mr Kumar had uploaded a video on Twitter urging people to "come together and subscribe to T-Series' YouTube channel and make India proud".

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The T-Series chairman said he had started the channel to further his father, Gulshan Kumar's, dream.

Nicknamed the Cassette King, Gulshan founded the T-Series music label in 1983.

He was assassinated coming out of a Hindu temple in 1997.