How do you become a band in 4 days?

To become a band in four days, start by gathering a group of musicians who share a common interest in music and have compatible skills. Spend the first day selecting a genre and writing or choosing a few songs to perform. Dedicate the next two days to rehearsing those songs, focusing on arrangement, timing, and stage presence. On the fourth day, consider performing at a local open mic or recording a demo to showcase your newly formed band.