Drew, who plays the drums for Fender, shared a message whilst watching Glastonbury in 2014.
He said: "My Dad's band is currently headlining the Avalon Stage at Glastonbury.
"What a way to raise the bar for me."
The Tweet was shared at 23:48 on Sunday, June 29 2014, which coincides with the time that Peatbog Faeries were on the Avalon Stage.
Fender posted the Tweet and called it a 'crazy and beautiful' interaction to come across ahead of playing Glastonbury tonight.
He said: "How crazy and beautiful is this interaction between our Drew and his dad considering what' happening tomorrow?"
The 'Seventeen Going Under' singer will take to the hallowed Pyramid Stage at 8:15 pm on Friday.
In a separate message shared online, Fender said: "I've always wanted to go to Glastonbury Festival and always dreamed of playing the Pyramid Stage as a young lag.
"Tomorrow I'll do both."
The Geordie star has been given an hour-long set, which finishes at 9:15 pm.
Billie Eilish will headline the Pyramid Stage after Fender, become the youngest ever solo singer to do so.