It's amazing to think that Maiden perfected the sound that would define them for the next 30+ years on their very first album. It's heavily influenced by Thin Lizzy, but it's moulded into something unique. The dual guitar melodies are in place, the Steve Harris bass lines, the quiet refrains and the simple but addictive chorus'. There's also a distinct punk vibe running throughout, mostly due to Paul Di'Anno's vocals; they would eventually drop that part (along with Di'Anno) but it's a joy to revisit it. The eponymous release is still one of my favourite Maiden albums.