ITunes is rapidly dominating the global market for music sale. Assume that the download  price for Dance artist Calvin Harris's single "Feel So Close" is $1.19 and the number of  downloads per day world-wide is 3000. What will happen to the market for this single if the
following events occur:

(i) The population of Dance music fans decreases AND productivity in music production increases?

(ii) Dance fans switches away from Dance music to R&B music AND the price of MP3 players increases

(iii) The number of other Dance singles decreases on iTunes AND income increases

(iv) The artist is rumoured to have died AND the download price of Paul Simon's "You can call me Al" decreases substantially.

Each event (i, ii, iii and iv) occurs independently (ceteris paribus). For each of the following  situations, explain what will happen to the equilibrium price and the equilibrium quantity for the download of "Feel So Close" on iTunes. For each part, you must:

I) draw an appropriately labeled diagram,

II) show the adjustment process from the original to the new equilibrium, and

III) a detailed written explanation of this adjustment process.