Crudely speaking, size can be determined by a multitude of factors including environment, competition and space to grow into. Handily, for the sake of this review, the same biological principles can be transferred to culture, and as a subsection, music. Let’s put the Dublin jazz scene under the microscope here for a minute. In terms of environment, JJ Smyth’s has consistently flown the flag for Dublin’s jazz and blues scene for years, but is limited by its size and accessibility, whilst Sugar Club is arguably the best suited venue but is a challenge to book for jazz promoters amongst events…