FAVORITES OF 2012 Found a great combination of artists of all ages making music still vital, challenging and just plain entertaining. Gorgeous melodies, strong grooves and relevant themes continue to shine each year, in both the album format and the digital single. These are not really the biggest selling records, but more the ones I spent the most time listening during the year. I decided for the first time to divide the music makers into three age groups. Never really thought about that before, but now that so many men and women are making pop and rock music into their 70's, it has stretched the writing cycle well beyond teen angst and middle-aged revolution. NEW ELDERLY BOB DYLAN - 'Duquesne Whistle' has the single best groove of the year. ROLLING…