Jason Derulo, Halsey, Gallant And Delta Rae Kick Off Under 30 Music Festival

Flying High: Jason Derulo closed out the Forbes Under 30 Music Festival with a spirited set, following Halsey, Gallant and Delta Rae at City Hall Plaza in Boston. (Photo: Jordan Temprofor Forbes)

Many musicians will tell you the best way to win over audience membersis to find a way to relate to them.Last night in Boston,Halsey–the singer-songwriter and 30 Under 30 Class of 2016 honoree–found an unusual common thread.

“You don’t know what it means to have a respectable magazine say you matter,...