The songs on the Kickstarter page sound like they're ripped right out of Banjo Kazooie and Tropical Freeze. I like them both, but I hope they try to give this game it's own identity instead of just relying on their past projects.
Even though I have no plans on supporting it on Kickstarter, I am very excited to see how this turns out; everything I've seen so far suggests these guys are genuinely trying to make a great game and are having fun doing it.
The jungle level track sounds different from any banjo kazooie track, but i mean, yeah, it's going to sound similar considering its done by the same person. Grant Kirkhope does the same melody for a lot of his compositions. Main thing i like about the project personally is that they aren't burdened by any higher up like Microsoft, so they can potentially make the product that they want to make without any issue. That's pretty much what drove Rare into the toilet.
From the looks of the concept art, it does look like in addition to the jungle level, we're getting a snowy level as well. In terms of level design and locale, it'll be interesting to see where they go. Banjo-Kazooie and Tooie have had so many different locales so it's hard to figure where they could go.
BK: desert, haunted house, tropical cove, forest with seasonal parts, harbor in a bay, snowy peak, a swamp, and a watery cavern.
BT: Mayan temples and forest, fire and ice level, sky level, underwater level, prehistoric level, amusement park, an industry and a mine.