Adventure, you say? Whistling you say? Perhaps it's a song that's not just about an adventure but one that takes you on one. Think outside the box, or rather outside the usual playlist. And remember, whistling tunes are catchy for a reason, they're meant to be found. Is it possible you've created a masterpiece in your memory, blending various songs into one ultimate indie whistle-track?

It might not be this one, but 'Let Her Go' by Passenger has some whistling and it's the right genre. Does it sound familiar?

lol just whistle back into the void until the void whistles back the name of the song.

This is a long shot but could be 'Fitz and The Tantrums - The Walker'. Not a perfect match lyric-wise but the whistling is pretty standout. Good luck!

I think it's 'Home' by Edward Sharpe & The Magnetic Zeros. Always gets stuck in my head for days.

There's a chance it could be 'Pumped Up Kicks' by Foster the People? It's got that whistling sound with a catchy beat. The lyrics don't match but the brain is weird with memories. Give it a listen maybe!

Hmm, not a lot to go on, but the whistling makes me think of Edward Sharpe & The Magnetic Zeros 'Home'? Not indie like Peter Bjorn and John tho. Check it out just in case?

Pretty sure you're thinking of 'Young Folks' by Peter Bjorn and John. It has that indie vibe and iconic whistling. The line 'take me on an adventure' doesn't ring a bell, but maybe you're blending lyrics? Happens all the time lol.