Bodyslam frontman Toon Bodyslam is undergoing surgery on Thursday and vows a return to performing at full strength after a one-month break for recovery.

Toon, whose real name is Artiwara Kongmalai, wrote a Facebook post on Wednesday apologising to fans and concert organisers for the enforced break from the rigours of rock.

He said he made the decision to have surgery after consulting doctors from several hospitals. It is his second operation following aminor procedure in 2024 on a nerve cavity in his left elbow.

Genie Records said in a press release that Toon’s doctors had detected a deteriorating cervical spine and a bone spur. The singer was also found to be suffering from nerve compression in his left arm that hinders daily activities.

The record company promised fans that Toon and his Bodyslam band would be back to entertain them at G27 Fest at Rajamangala National Stadium on Feb 21.

The festival celebrates the 27th year of Genie Records with more than 30 bands and artists scheduled to perform. Bodyslam will be one of the highlights of the 10-hour marathon show.

One of the concerts cancelled is Rock Mountain 2026 on Khao Khor in Phetchabun province on Saturday.

Toon said his symptoms began in the last quarter of 2025 when he felt weakness in the fingers of his left hand and neck pain during concerts.

“I forced myself to play the concerts and monitored the symptoms every day. But my situation did not get better and instead it was getting worse every day,” he wrote.

He ended his message with the hashtag #withouteverymembernobodyslam

Toon has been dubbed the iron man from a charity run that covered more than 2,000 kilometres — from the southernmost district of Betong in Yala province to the northernmost in Mae Sai, Chiang Rai — in 2017.

The 55-day endeavour raised 1.3 billion baht for 11 Thai public hospitals.