File:Withers - Harmonica Effect (Route 1)

Note: There are actually two ways to get this effect. The second route will be uploaded soon. This way is preferred since it's more quick to do, but it's up to you which way you want to go for.

Start or continue the game, sleep in the bed to enter the dream world. Exit the balcony and go to the Nexus (upper left door). Go to the bottom right door to enter the Mushroom World. Head all the way right and walk through the mushroom door to enter the Mushroom Path. Go all the way right again, and you'll find yourself in the Harmony Library. Follow where I go and you'll get the effect. This effect allows Yakitsuki to play the harmonica