Well, it appears that you have three entities.
Events
Musicians
Instruments
Each Event will be associated with one or more Musicians.
Each Musician will be associated with 0 or more Events.
A many-to-many relationship (using an intersection table) would support this requirement.
Each Musician will be associated with one or more Instruments
Each Instrument will be associated with 0 or more Musicians.
A many-to-many relationship (using an intersection table) would support this requirement.
So, one solution to model your requirements would consist of a table for each of the three entities, plus a table for each of the two many-to-many relationships.