The singer took to the Main Stage for his debut performance at the Glasgow Green event.
In a video posted to Twitter last night the former postman called on music fans to "set their alarms" as he prepared for his "big day".
Thousands of fans are expected to flock to the outdoor venue this weekend as Scotland's largest festival continues.
Evans, a former postman-turned-TikTok sensation, 26, from Airdrie, North Lanarkshire, had urged people took to the main stage just before noon on Saturday.
The Wellerman singer told his fans he “cannot believe I am playing the main stage”, just months after rising from obscurity thanks to his viral renditions of the maritime ballad.
Festival-goers enjoyed mild weather and patches of sunshine despite a grey sky looking mildly threatening at times.
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]]( "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]]( "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]]( "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]]( "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]]( "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]
![[Photographs by Gordon Terris]](/resources/images/12995284.jpg?type=mds-article-962)
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]](/resources/images/12995233.jpg?type=mds-article-620 "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]](/resources/images/12995239.jpg?type=mds-article-620 "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]](/resources/images/12995252.jpg?type=mds-article-620 "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
![The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]](/resources/images/12995253.jpg?type=mds-article-620 "The National: Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday. [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995234.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995235.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995240.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995243.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995246.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995248.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995249.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
![The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]](/resources/images/12995250.jpg?type=mds-article-620 "The National: Fans watch Nathan Evans on the main stage at TRNSMT at Glasgow Green Saturday [Photograph by Gordon Terris]")
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