adjective

lacking any obvious principle of organization.

the music business works in a haphazard fashion

random,unplanned,unsystematic,unmethodical,disorganized,disorderly,irregular,indiscriminate,chaotic,hit-and-miss,arbitrary,orderless,aimless,undirected,careless,casual,slapdash,slipshod,chance,accidental,higgledy-piggledy