CREATE TABLE table_29525 ("Episode air date" TEXT, "Audition city" TEXT, "First audition date" TEXT, "Audition venue" TEXT, "Callback audition date" TEXT, "Callback venue" TEXT, "Golden tickets" TEXT)

In how many different audition cities were the Bridgestone arena auditions held?
SELECT COUNT("Audition city") FROM table_29525 WHERE "Audition venue" = 'Bridgestone Arena'
SELECT COUNT("Audition city") FROM "table_29525" WHERE "Audition venue" = 'Bridgestone Arena'