- ... that the Russian seven-string guitar's open-G tuning D-G-B-D-G-B-D (illustrated) approximates the major-thirds tuning D#-G-B-D#-G-B-D#?
- ... that two of Lecrae's albums have been called the most important albums in Christian hip hop?
- ... that environmentalist critics have argued that Woody Guthrie's song "Pittsburgh Town" (1941), recorded by Pete Seeger, was a commentary on the city's pollution problem at the time?
- ... that Nicole Scherzinger's song "Boomerang" is about "not letting the haters keep you down"?