As “Bad Moon Rising” re-created the Sun sound, “Up Around the Bend” extends it. The old mechanics are there but Sun never put out a record with this single’s natural loudness. The record has the jolting power of the best car songs–you can tune in at any moment and get it all. Three bursts of guitar–the introduction, the bridge, and a finale that can reduce the listener to a state of helpless ecstasy–structure the song, but perhaps it’s those lines that really create its impact: “You can ponder perpetual motion… Always time for good conversation.” You can ponder perpetual motion. Leave your radio on, and the song comes back at you every hour or so, and it can make your day. It sure makes mine.
Rolling Stone, May 28, 1970