Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Series # | Season # | Title | Directed by | Written by | Musical guest and song | Original air date | Production code |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 27.0 | 1.0 | "High on the Hog" | Frederick K. Keller | Larry Moskowitz | Al Jarreau "We're In This Love Together" | August 31, 1995 | K0503 |
| 29.0 | 3.0 | "Man's Best Friend" | Frederick K. Keller | Natalie Chaidez | Guy "Tell Me What You Like" | September 14, 1995 | K0504 |
| 32.0 | 6.0 | "Buster and Claudia" | Don Kurt | Michael Mahern | B.B. King " The Thrill Is Gone " | October 5, 1995 | K0510 |
| 33.0 | 7.0 | "Student Affairs" | Michael Lange | Larry Moskowitz | Jon B. " My Cherie Amour " | October 12, 1995 | K0511 |
| 34.0 | 8.0 | "The Highest Bidder" | Frederick K. Keller | Judith McCreary | D'Angelo "Brown Sugar" | October 19, 1995 | K0513 |
| 35.0 | 9.0 | "Young, Beautiful and Dead" | Michael Lange | Natalie Chaidez | Silk " Wildflower " | November 2, 1995 | K0512 |
| 36.0 | 10.0 | "Color Lines" | Frederick K. Keller | Shane Salerno | Marnell Kenan " Run to You " | November 9, 1995 | K0514 |
| 37.0 | 11.0 | "The Finals" | Don Kurt | Reggie Rock Bythewood | Al Green "Love and Happiness" | November 16, 1995 | K0515 |
| 39.0 | 13.0 | "Bad Girls" | Peter R. McIntosh | Michael Mahern | Dionne Farris "Food for Thought" | December 14, 1995 | K0517 |
| 40.0 | 14.0 | "A Time to Kill" | Frederick K. Keller | Judith McCreary | Monifah "I Miss You (Come Back Home)" | January 4, 1996 | K0519 |
| 41.0 | 15.0 | "Bad Blood" | Matthew Penn | Reggie Rock Bythewood & Jamal Joseph | Brownstone "Don't Ask My Neighbor" | January 18, 1996 | K0501 |
| 42.0 | 16.0 | "Fire Show" | Jace Alexander | Natalie Chaidez | Tito Nieves "Lo Prometido Es Deuda" | February 1, 1996 | K0518 |
| 43.0 | 17.0 | "Toy Soldiers" | Melanie Mayron | Larry Moskowitz | Luther Vandross " A House Is Not a Home " | February 8, 1996 | K0502 |
| 44.0 | 18.0 | "Sympathy for the Devil" | Martha Mitchell | Shane Salerno | Xscape " All This Love " | February 15, 1996 | K0520 |
| 45.0 | 19.0 | "Checkmate" | Oscar L. Costo | Judith McCreary | Roberta Flack " Killing Me Softly with His Song " | February 22, 1996 | K0521 |
| 47.0 | 21.0 | "The Reckoning" | Jesús Treviño | Judith McCreary | Aaron Neville " Use Me " | March 14, 1996 | K0509 |
| 48.0 | 22.0 | "The Enforcers" | Matthew Penn | Michael Mahern | Koko Taylor " Wang Dang Doodle " | April 4, 1996 | K0523 |
Question:
What's the musical guest and the song in the episode titled "Checkmate"?
Answer:
Roberta Flack " Killing Me Softly with His Song "