after u beat the evil frog, u became famous which led you to become rich (plus u got treasure). You even bought a computer! how to beat the boss: the boss is very smart and uses items instead of brute force. his first attack is an egg throw which he throws very fast, make sure to dodge that. his second move is a ray gun that shoots a giant laser, make sure to move to the top or bottom to not get hit. important part: his final ability is potion throw, when he throws the potion to you make sure to click on the potion to send it back to him. you also cant dodge the potion, you have to click on it.
if you are playing this and haven't beaten the first game, I recommend beating it then playing this again uses guitar playing from me (I was lazy so I reused some of the music from the old game)