The following is an in-depth guide for the First Melody of Mother 1.
The first thing you see is that you have to name all of your characters as well as some other things you have to choose. Here are the canon names and choices.
"What is this boy's name?" - Ninten
"What is this girl's name?" - Ana
"This other boy's name?" - Lloyd (Some call him Loid, but Lloyd is the confirmed spelling.)
"This last boy's name?" - Teddy
"What is your favorite food?" - Prime Rib
♪Poltergeist♪
You get woke up in the middle of the night with rattling around the house. You can walk around your room, but the only real place to go is to the left door.
HP: 6
PP: 0
OF: 3
DF: 5
FT: 1
FC: 3
SP: 5
ST: 3
WS: 3
Just keep fighting it and it will go down eventually. Go to the room to the left. Here, you can go to the north east door for another fight against a lamp, or you can go north west for a battle against the doll.
HP: 12
PP: 0
OF: 4
DF: 5
FT: 3
FC: 1
SP: 5
ST: 1
WS: 1
Again, you should just be able to keep basing the Doll to eventually defeat him. After the battle, check the doll to hear the first melody.
Next: Second Melody