| # | Title | Rating | Length |
|---|
| 1 | Does Anybody Really Know What Time It Is? | | 3:18 |
| 2 | 25 or 6 to 4 | | 4:49 |
| 3 | Colour My World | | 3:01 |
| 4 | Lowdown | | 3:33 |
| 5 | Free | | 2:16 |
| 6 | Just You 'n' Me | | 3:42 |
| 7 | Old Days | | 3:29 |
| 8 | Wishing You Were Here | | 4:33 |
| 9 | Baby, What a Big Surprise- assistant recording engineer and recording engineer:
- Armin Steiner (strings)
- assistant engineer:
- Tom Likes
- engineer:
- Wayne Tarnowski
- producer:
- James William Guercio
- acoustic guitar and bass:
- James William Guercio (in 1977)
- additional background vocals:
- Tim Cetera (in 1977) and Carl Wilson (in 1977)
- orchestrator:
- Peter Cetera, Dominic Frontiere and James William Guercio
- phonographic copyright (℗) by:
- CBS, Inc. (in 1977, in 1978), Chicago Records Inc. (in 1977) and Rhino Entertainment Company (in 2002, in 2007)
- recorded at:
- Caribou Ranch Recording Studio in Nederland, Colorado, United States and Sound Labs, Inc. in Hollywood, Los Angeles, California, United States (strings)
- mixed at:
- Caribou Ranch Recording Studio in Nederland, Colorado, United States
- recording of:
- Baby, What a Big Surprise (in 1977)
- orchestrator:
- Dominic Frontiere
- lyricist and composer:
- Peter Cetera (in 1977)
- publisher:
- BMG Music Publishing Ltd., BMG Songs, Inc., Island Music Ltd. and Universal Music Publishing MGB Ltd.
| 3 | 3:02 |
| 10 | Alive Again [Single Edit] | | 3:27 |
| 11 | Thunder and Lightning | | 3:30 |
| 12 | You're the Inspiration | | 3:48 |
| 13 | Look Away | | 3:59 |
| 14 | Bigger Than Elvis | | 4:30 |
| 15 | Saturday in the Park [Live at the Aerie Crown Theatre, 1972] | | 3:49 |