What's "gaslight kerosene" mean?

Native speaker’s answer
Rebecca
A gaslight and kerosine lamp is a lamp that burns a kind of oil (kerosene) for light. Gas[light] and kerosene are pretty much interchangeably used, so there's no need to use both words like the singer has done here. Ex: When I go camping, I like to use a gas lamp for light. Ex: I have an antique kerosene lamp, from when electricity wasn't commonly used yet.