Of the musically talented brothers in the Morgan family of New Orleans, only Isaiah Morgan was given a first name that could be said to be distinctive if not exactly unusual. The range of Biblical names that could be conceivably stamped on babies' foreheads was much grander back at the close of the 19th century, since which time the siblings' names of Andrew, Alan, and Sam have become impossibly common, while Isaiah has evolved into something of a grab-bag for demented typographers who enjoy combining vowels at random. Credits can and do appear for this fine trumpeter and band...