i got the harp,you play it by waggling your wiimote back and forth and there are no specific song,the game just go "TIME TO WAGGLE" and you do so...
some place have butterflies near them and if you play your harp near these,a statue pops out and gives you a hint but other than that there seems to be no purpouse for it
i also did the first "TRIAL" it works like this,you have 15 thingamajig to get while you are chased by phantoms,if the phantoms hit you,you have to redo the whole thing again but everytime you get a thingamajig,they stop for 90 seconds,there are ghost patroling the area and if they find you,the phantom awaken instantly
so yeah it's like the worst of twilight princess with the worst of phantom hourglass,luckily the zone is not too big so it doesn't take much time and getting enough thingamajig that the phantom never end moving isn't too hard and the ghost aren't fast enough to catch you but still it's more annoying filler especialy considering all of this take place in a zone you have already cleared...
actualy speaking of filler,here's all i had to do to get from dungeon 3 to dungeon 4 just so that you can get an idea,there's no real big spoiler here but i'm putting it in spoiler tags for the especialy wimpy readers
spoiler (click to show/hide)
- return to forest zone to speak with exposition hag
- fight a boss by striking at his incredibily obvious weak spot
- exposition hag tells you to return to the city to talk with the mayor
- go talk with the mayor,he gives you a riddle involving the lighthouse
- go talk with npc near the lighthouse to get an hint involving two windmills
- but wait! one of the windmills is broken,the only way to repair it is to get a missing item but to get the missing item you need to speak with mechanic guy
- go speak with mechanic guy,he needs an item to get you what you need
- luckily you can and probably picked the item already before speaking to him but if you haven't return to desert zone
- return to volcano zone to search for the missing item
- finaly activate that damn lighthouse
- return once again to forest zone
- search for the trial place
- do the trial
- get a new item which let you explore new zone after so much pointless backtracking
- find the npc that reveal dungeon 4
- but wait! npc that reveal dungeon 4 wants a favor done!
- and here comes the point where it gets really really stupid... are you ready?
- 100% sure?
- the favor is to re-do dungeon 1 again! while the enemies are different from your first visit there are no new enemies,there is no new boss,the door are all still opened and the puzzle are already all solved (well there is one door that gets relocked just for shit and giggles i guess)
- of course you still need to return to the npc,ehy at least they don't make you backtrack to the exit of dungeon 1!