Table:
text: Chicago discography
Singles
Singles
Year_ Title US_100 US_AC Lead_singer Album Label_and_cat_
Feb. 1985  Along Comes a Woman ** 14 25 Cetera Chicago 17 Full Moon/Warner 29082
Aug. 1986 25 or 6 to 4 (Newly re-recorded version) 48 — Scheff Chicago 18 Full Moon/Warner 28628
Oct. 1986  Will You Still Love Me?  3 2 Scheff/Champlin Chicago 18 Full Moon/Warner 28512
March 1987  If She Would Have Been Faithful...  17 9 Scheff/Champlin Chicago 18 Full Moon/Warner 28424
June 1987  Niagara Falls  91 — Scheff Chicago 18 Full Moon/Warner 28283
May 1988  I Don`t Wanna Live Without Your Love  3 5 Champlin Chicago 19 Full Moon/ Reprise 27855
Sept. 1988  Look Away  1 1 Champlin Chicago 19 Full Moon/ Reprise 27766

text: Chicago discography
Singles
Singles
Year_ Title US_100 US_AC Lead_singer Album Label_and_cat_
Jan. 1989  You`re Not Alone  10 9 Champlin Chicago 19 Full Moon/ Reprise 27757
April 1989  We Can Last Forever  55 12 Scheff Chicago 19 Full Moon/ Reprise 22985
Nov. 1989  What Kind of Man Would I Be?  5 2 Scheff Chicago 19 / Greatest Hits 1982-1989 Full Moon/ Reprise 22741
July 1990 Hearts in Trouble 75 — Champlin Days Of Thunder Soundtrack DGC 19679
Jan. 1991  Chasin` the Wind  39 13 Champlin Twenty 1 Reprise 19466
Apr. 1991 Explain It to My Heart — — Scheff/Champlin Twenty 1 Reprise 19449
Aug. 1991 You Come to My Senses — 11 Scheff Twenty 1 Reprise 19205

text: Chicago discography
Singles
Singles
Year_ Title US_100 US_AC Lead_singer Album Label_and_cat_
June 1995 Dream a Little Dream of Me — — Scheff/Jade Night & Day Big Band Giant
April 1997 Here in My Heart — 1 Champlin/Scheff The Heart of Chicago 1967–1997 Reprise
Oct. 1997 The Only One — 17 Lamm/Champlin/Scheff The Heart of Chicago 1967–1997 Reprise
June 1998 All Roads Lead to You — 14 Champlin/Lamm/Scheff The Heart of Chicago 1967–1998 Volume II Reprise
Oct. 1998 Show Me a Sign — 28 Scheff/Champlin The Heart of Chicago 1967–1998 Volume II Reprise
Sept. 1999 Back to You — — Scheff Chicago XXVI: Live in Concert Chicago Records
Feb. 2006 Feel — 19 Lamm Chicago XXX Rhino
May 2006 Love Will Come Back — 21 Scheff/Champlin Chicago XXX Rhino
June 2008 Let`s Take a Lifetime — — Scheff Chicago XXXII Stone of Sisyphus Rhino

text: Chicago discography
Singles
Singles
Year_ Title US_100 US_AC Lead_singer Album Label_and_cat_
Feb. 1974  (I`ve Been) Searchin` So Long  9 — Cetera Chicago VII Columbia 46020
June 1974  Call on Me  6 1 Cetera Chicago VII Columbia 46062
Oct. 1974  Wishing You Were Here  11 1 Kath/Cetera Chicago VII Columbia 10049
Feb. 1975  Harry Truman  13 — Lamm Chicago VIII Columbia 10092
April 1975  Old Days  5 3 Cetera Chicago VIII Columbia 10131
Aug. 1975  Brand New Love Affair (Part I and II)  61 — Kath/Cetera Chicago VIII Columbia 10200
June 1976  Another Rainy Day in New York City  32 2 Cetera Chicago X Columbia 10360
July 1976  If You Leave Me Now  1 1 Cetera Chicago X Columbia 10390

text: Chicago discography
Singles
Singles
Year_ Title US_100 US_AC Lead_singer Album Label_and_cat_
July 1980 Thunder and Lightning 56 — Cetera/Lamm Chicago XIV Columbia 11345
Oct. 1980 Song for You — — Cetera Chicago XIV Columbia 11376
May 1982  Hard to Say I`m Sorry  1 1 Cetera Chicago 16 Full Moon/Warner 29979
Sept. 1982  Love Me Tomorrow  22 8 Cetera Chicago 16 Full Moon/Warner 29911
Jan. 1983 What You`re Missing 81 — Cetera Chicago 16 Full Moon/Warner 29798
April 1984  Stay the Night  16 — Cetera Chicago 17 Full Moon/Warner 29306
July 1984  Hard Habit to Break  3 3 Cetera/ Champlin Chicago 17 Full Moon/Warner 29214
Nov. 1984  You`re the Inspiration  3 1 Cetera Chicago 17 Full Moon/Warner 29126

text: Chicago discography
Singles
Singles
Year_ Title US_100 US_AC Lead_singer Album Label_and_cat_
June 1971 Beginnings/ (A-Side) 7 1 Lamm The Chicago Transit Authority Columbia 45417
June 1971 → Colour My World (B-Side) 7 — Kath Chicago II Columbia 45417
Sept. 1971 Questions 67 and 68/ (A-Side) 24 — Cetera/Lamm The Chicago Transit Authority Columbia 45467
Sept. 1971 → /  I`m a Man  (B-Side) 49 — Kath/Cetera/Lamm The Chicago Transit Authority Columbia 45467
July 1972  Saturday in the Park  3 — Lamm/Cetera Chicago V Columbia 45657
Oct. 1972  Dialogue (Part I & II)  24 — Cetera/Kath Chicago V Columbia 45717
June 1973  Feelin` Stronger Every Day  10 — Cetera Chicago VI Columbia 45880
Sept. 1973  Just You `n` Me  4 7 Cetera Chicago VI Columbia 45933

Question: What is Champlin's Chicago 19 album US 100 rank with a US AC of 1 in the Chicago discography?