From the wiki:
Critics usually catalogue Marina and the Diamonds as a new wave pop artist. In an interview with The Guardian she said, “I suppose I’m an indie artist with pop goals”. Although Diamandis has urged that she never tries to sound like any other artist or copy a genre of music, she has been compared to a variety of artists such as Kate Bush[33] and most commonly Florence and the Machine. PopMatters commented on her vocal delivery and attitude saying it “has a tendency to overshadow the music, which is often melodically inventive, but we are rarely given the chance to realise this.” The Guardian‘s Paul Lester wrote that “her songs are hard to fathom. They veer between simple keyboards-based ballads and more upbeat and catchy, quirky new wave-inflected numbers enhanced by bass, guitar and drums.”