Denver Books and Music is an online portal for Denver Business Academy LLC., created to promote bookkeeping and accounting books and musical activities by Dr. Denver Pettigrew, PhD, CPA, MBA. Publications include: Accounting 101: Easy Bookkeeping and Accounting for Beginners; The Zen of Bookkeeping and Accounting: Basic Accounting for Pre-College and New Learners; Bookkeeping 101 Basic Accounting For Pre-College and New Learners; and Investigating Differences in Annual Profitability Rates in Developed and Emerging Markets: A Multiple Case Study. Dr. Pettigrew is also musician, Dr. Denver, with original compositions and cover songs streamed on major digital sites including Amazon, Spotify, Pandora, Deezer, YouTube, Apple Music, iTunes, Tidal, SoundCloud, TencentMusic, and others.  Mechanical licenses have been acquired for cover songs composed by original writers in accordance with U.S. copyright laws.