Describe the sampling method that you think would be most appropriate, making sure to explain how that method would be implemented:

a) A record label with a wide variety of artists in multiple genres wants to do a market study about the music preferences of the population at large in order to decide where and how to market each of its artists.

b) An apiarist (beekeeper) keeps several hundred self-contained hives on her farm. She would like to test out a new brand of calming pheromone on a sample of her bees, noting it would be difficult to keep track of the behavior of individual bees.