Music Sonic Reducers: John Lennon’s Imagine Turns 50! Sep 9, 2021 Facebook Twitter Pinterest WhatsApp Sonic Reducers: 1 topic. 2 music nerds. 5 minutes. Listen in as we celebrate the 50th anniversary of John Lennon’s Imagine, trying to figure out why it’s so timeless, and get way too sincere and emotional for a couple of old cynics.