| # | Title | Rating | Length |
|---|
| 1 | Questions 67 and 68 (US edit/mono mix) | | 4:40 |
| 2 | Make Me Smile (US edit) | | 3:02 |
| 3 | 25 or 6 to 4 (Japanese edit) | | 3:21 |
| 4 | Someday (August 29, 1968) (Japanese edit) | | 2:48 |
| 5 | Free | | 2:18 |
| 6 | Lowdown (Japanese Lyrics) | | 3:35 |
| 7 | Beginnings (US edit) | | 2:50 |
| 8 | Questions 67 and 68 (US edit/Japanese Lyrics) | | 3:30 |
| 9 | Saturday in the Park | 4 | 3:56 |
| 10 | Dialogue (Part I & II) (US edit) | | 5:03 |
| 11 | State of the Union (Japanese edit) | | 4:02 |
| 12 | Feelin' Stronger Every Day | | 4:16 |
| 13 | Just You 'n' Me | | 3:44 |
| 14 | (I've Been) Searchin' So Long (US edit) | | 4:19 |
| 15 | Call on Me- recording engineer:
- Armin Steiner (strings)
- engineer:
- Jeff Guercio and Wayne Tarnowski
- producer:
- James William Guercio
- mixer:
- Phil Ramone
- lead vocals:
- Peter Cetera (from 1973-08 until 1973-12)
- phonographic copyright (℗) by:
- CBS, Inc. (in 1974) and Rhino Entertainment Company (in 2002, in 2007)
- recorded at:
- Sound Labs, Inc. in Hollywood, Los Angeles, California, United States and Caribou Ranch Recording Studio in Nederland, Colorado, United States (from 1973-08 until 1973-12)
- recording of:
- Call on Me (from 1973-08 until 1973-12)
- lyricist:
- Lee Loughnane
- composer:
- Lee Loughnane (in 1973)
- publisher:
- Big Elk Music, COM Music, IQ Music Ltd. and Spirit Music Publishing Ltd.
| | 4:03 |
| 16 | Harry Truman- engineer:
- Jeff Guercio, Mark Guercio and Wayne Tarnowski
- producer:
- James William Guercio
- mixer:
- Phil Ramone (in 1974-09)
- lead vocals:
- Robert Lamm (in 1975)
- vocals:
- John Carsello (in 1974-09), Donna Conroy (in 1974-09), Bob Eberhardt (in 1974-09), Steve Fagin (in 1974-09), Kristy Ferguson (in 1974-09), Linda Greene (in 1974-09), Lee Loughnane (in 1974-09), Brandy Maitland (in 1974-09), Katherine Ogden (in 1974-09), Laudir de Oliveira (in 1974-09), James Pankow (in 1974-09), Walter Parazaider (in 1974-09), Joanne Rocconi (in 1974-09) and Richard Torres (in 1974-09)
- phonographic copyright (℗) by:
- CBS, Inc. (in 1975), Warner Strategic Marketing (in 1975) and Rhino Entertainment Company (in 2002)
- recorded at and mixed at:
- Caribou Ranch Recording Studio in Nederland, Colorado, United States (in 1974-09)
- recording of:
- Harry Truman (in 1974-09)
- writer:
- Robert Lamm (in 1975)
- publisher:
- Big Elk Music (in 1975) and Lamminations Music (in 1975)
| | 3:03 |
| 17 | Old Days | | 3:32 |
| 18 | Another Rainy Day in New York City- recording engineer:
- Armin Steiner (strings)
- assistant engineer:
- Tom Likes
- engineer:
- Wayne Tarnowski
- producer:
- James William Guercio
- steelpan [steel drums]:
- Othello Molineaux (from 1976-03 until 1976-04) and Leroy Williams (from 1976-03 until 1976-04)
- lead vocals:
- Peter Cetera (from 1976-03 until 1976-04)
- phonographic copyright (℗) by:
- CBS, Inc. (in 1976) and Rhino Entertainment Company (in 2002)
- recorded at:
- Sound Labs, Inc. in Hollywood, Los Angeles, California, United States, Sound Labs, Inc. in Hollywood, Los Angeles, California, United States (strings) and Caribou Ranch Recording Studio in Nederland, Colorado, United States (from 1976-03 until 1976-04)
- mixed at:
- Caribou Ranch Recording Studio in Nederland, Colorado, United States (from 1976-03 until 1976-04)
- recording of:
- Another Rainy Day in New York City (from 1976-03 until 1976-04)
- lyricist and composer:
- Robert Lamm (in 1976)
- publisher:
- Big Elk Music, Island Music Ltd. and Lamminations Music
| | 3:01 |
| 19 | If You Leave Me- recording engineer:
- Armin Steiner (from 1976-03 until 1976-04: strings)
- assistant engineer:
- Tom Likes
- engineer:
- Wayne Tarnowski
- producer:
- James William Guercio
- acoustic guitar and bass:
- James William Guercio (from 1976-03 until 1976-04)
- lead vocals:
- Peter Cetera (from 1976-03 until 1976-04)
- French horn arranger and strings arranger:
- Jimmie Haskell
- phonographic copyright (℗) by:
- CBS, Inc. (in 1976), Rhino Entertainment Company (in 1976, in 2002), Warner Strategic Marketing Inc. (in 1976) and WEA International Inc. (in 1976)
- recorded at:
- Sound Labs, Inc. in Hollywood, Los Angeles, California, United States, Sound Labs, Inc. in Hollywood, Los Angeles, California, United States (strings) and Caribou Ranch Recording Studio in Nederland, Colorado, United States (from 1976-03 until 1976-04)
- mixed at:
- Caribou Ranch Recording Studio in Nederland, Colorado, United States (from 1976-03 until 1976-04)
- recording of:
- If You Leave Me Now (from 1976-03 until 1976-04)
- lyricist:
- Peter Cetera
- composer:
- Peter Cetera (in 1976)
- publisher:
- Big Elk Music, BMG Music Publishing Ltd., Copyright Control , Fairwood Music Ltd., Island Music Ltd., Polish Prince Music and Spirit Music Publishing Ltd.
| 4.2 | 3:58 |
| 20 | You Are on My Mind (US edit) | | 3:14 |
| 21 | 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 | 3:07 |
| 22 | Little One (US edit) | | 3:32 |
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