maps the city name and genre to a number

city and genre lookup

0 -- Boston
1 -- Chicago
2 -- Austin
3 -- Los Angeles
4 -- Nashville
5 -- Toronto

0 -- Show All
1 -- Alternative
2 -- Blues/R&B
3 -- Country
4 -- Electronic
5 -- Folk
6 -- Hip Hop
7 -- Pop
8 -- Rock
9 -- World




Band.MUSIC_GENRES.each_index { |i| puts "#{i} -- #{Band.MUSIC_GENRES[i]}\n" }