Rendering logos for guitars and basses listed in a database
The database should know which as bass        

Type 
ID 
name 

1 guitar 
2 bass

Brand 
ID 
name 
image 


where you link the Brand to the Type and a Brand

TypeBrand 
IDtype 
IDbrand 

select Brand.Name 
from Brand 
join TypeBrand 
  on Brand.ID = TypeBrand.IDbrand 
 and TypeBrand.IDtype = 2