[('rock', 3879179), ('electronic', 2288563), ('seen live', 2097509), (
    'alternative', 2059313), ('indie', 1971962), ('pop', 1873806), (
    'female vocalists', 1557702), ('metal', 1213678), ('classic rock', 
    1123712), ('alternative rock', 1123488)]
sorting dictionary by numeric value