Septième album studio du groupe sorti en 1980.
1. Spirit of Radio - 4:59
2. Freewill - 5:23
3. Jacob's Ladder - 7:30
4. Entre Nous - 4:37
5. Different Strings - 3:50
6. Natural Science - 9:18
Geddy Lee – bass, keyboards & vocals
Alex Lifeson – guitar
Neil Peart – drums & percussion
