Gary Watson was the frontman of The Lapelles who recently performed at T in the Park and the Belladrum festival.
A post on the band's Facebook page said Mr Watson died "as a result of injuries sustained in a tragic accident" on Saturday night.
Police said the death was not suspicious.
Emergency services were called to the River Clyde near Glasgow Bridge at about 22:00 on Saturday.
Mr Watson was rescued from the water and taken to Glasgow Royal Infirmary but later died.
The Lapelles statement read: "It's with shock, heavy hearts and sadness that we have to let you know the news that Gary sadly passed away this morning as a result of injuries sustained in a tragic accident last night.
"Today was his 22nd birthday. We are lost for words and struggling to process such a tragedy.
"Gary was a creative force, a man who without his vision this band wouldn't exist. We have lost a friend, a brother, a hero. At the moment it doesn't seem real.
"We send our deepest condolences to Gary's family and would appreciate your respect in allowing them & us some peace whilst we grieve. Forever in our hearts, with peace you go. X."
The band were due to head off on a UK tour in October.
Tributes were paid to Mr Watson on social media by fans and fellow bands.
Franz Ferdinand posted on Twitter: "We're so sad to hear of the tragic passing of @TheLapelles Gary Watson, a lovely, talented man. Thoughts are with his family, friends & band."

Coral "bleaching" has led to widespread coral decline and habitat loss on the world's largest coral reef system.
Surveys show that 29% of corals died in 2016, greater than the  figure of 22% projected in mid-2016.
The worst-hit area was near Port Douglas, where 70% of shallow water corals died, but there was a recovery of corals in the south of the reef.
The latest results come from surveys carried out by the Marine Park Authority, Queensland Parks and Wildlife Service, Australian Institute of Marine Science and the ARC Centre of Excellence for Coral Reef Studies.
Great Barrier Reef Marine Park Authority chairman Russell Reichelt said: "As has been the case with reefs across the world, the Great Barrier Reef has experienced significant and widespread impacts over the last two years.
"We're very concerned about what this means for the Great Barrier Reef itself and what it means for the communities and industries that depend on it."
According to newpaper reports, a meeting over the reef's future was recently told that the federal and Queensland government's long-term plan to protect the reef, announced in 2015, was no longer achievable.
Bleaching occurs when the algae living on coral is expelled due to stress caused by extreme, sustained changes in temperature. This turns the coral white.
In 2017, further coral die-offs are expected from the second year of bleaching in a row, and the impacts of tropical cyclone Debbie, the officials said.
Researchers say that climate change is a significant driver behind the coral loss and experts have said the window is closing fast to cut the greenhouse gas emissions pushing up temperatures and harming the reef.

Portsmouth Police tweeted residents took refuge on the roof of the building while awaiting rescue.
People were told to avoid the area as firefighters from Hampshire Fire and Rescue worked to get the blaze on the fourth floor under control.
The fire was put out shortly before 15:00. Hampshire Fire and Rescue tweeted "everyone was safe".
The people on the roof were advised to wait until the smoke had dispersed to come down.
The fire service said it is believed the fire started in the kitchen.
An onlooker tweeted it was "chaos" in the area as the car park at Gunwharf Quays - a waterfront shopping outlet - was closed.
People living in nearby buildings were advised to keep windows and doors shut.

A number of houses were evacuated after the device was discovered on Ainsworth Avenue off the Shankill Road.
The security alert has now ended.
Police have appealed for information about the incident.
Democratic Unionist Party MLA William Humphrey said those behind the device had been "utterly reckless".
"This criminal act of madness will be condemned by all right-thinking people," he added.
Tributes have been paid to a musician who died after falling into the River Clyde in Glasgow the day before his 22nd birthday.
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Australia's Great Barrier Reef lost nearly a third of its corals in the past year, officials have said.
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Firefighters tackled a large fire in a high-rise building in the Gunwharf Quays area of Portsmouth.
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Police have said a suspicious object found in west Belfast was a "crude but viable" bomb.