From NPR.org: Oleg Berg, an engineer and musician in the Ukraine, had a dream as a kid. He wanted to be able to take popular songs, the recordings of which were instantly recognizable, and invert their sound: making major keys minor and vice versa.
Decades later, he has finally done it. Using a variety of music software, he created inverted versions of the Eurythmics’ “Sweet Dreams (Are Made of This),” Ella Fitzgerald’s recording of “Summertime” and — his favorite — “Hey Jude” by The Beatles.
Listen to the story at npr.org.