World 6 – Confiscation of the Capital City’s music collection
There are six cassette tapes in this world.
Found at the very top-center of 6-2. Simply reach the platform it is situated upon and collect the cassette.
Found near the start of 6-3. After being dropped off at the starting point by Jette, simply head left past the cannon and carefully scale the airship wall to collect the cassette.
Found near the start of the first area of 6-4. After solving the second switch puzzle using eggplant statues (or wizards) head to the waterwheel and swing up the wall to the left of it. The cassette is on a platform slightly above.
Found near the end of the first area of 6-4. Before using the scaffolding to reach the area to the right, climb up the wall to the left…
… to reach a new platforming segment!
This platforming segment contains gimmicks from 3-3, World 2, and World 5. Passing the segment will reveal the cassette on a pillar to itself.
Found in the middle part of the third area of 6-4. Upon reaching and using (or, in my case, skipping) the final gondola, instead of following the ice slopes, climb up the wall to the left of it.
After a while of climbing, you will notice a hole in the ceiling. Begin climbing up that to reach the cassette.
Found in the very last room of the third area of 6-4. Instead of facing the wizards and guards below or exiting the stage to the right, take a detour to the left. There is a small gap in the ceiling that can be climbed through to reach the required segment. From there, simply fall down to the bottom and head to the right to collect the final cassette tape!
I hope this guide has helped you in your Cassette-collecting days!