Keith and Mick, Roger and Pete, Joey and Dee Dee, Marshall and Anastasio: all songwriting duos that have made a mark on rock ’n roll. Well, there’s another pair on the prowl. Dylan and Declan, the songwriting and performing collab of Dylan Frechette and Declan Scully, are here to melt your face and chew bubblegum … and they’re all out of bubblegum.