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:
| Version | Length | Album | Remixed by | Year | Comment |
| --- | --- | --- | --- | --- | --- |
| Album/Single version | 4:30 | Avant que l'ombre... | — | 2005 | See the previous sections |
| Radio edit | 3:55 | — | — | 2005 | The musical introduction is almost fully deleted, as well as the last refrain, and the musical bridge is shortened. |
| Instrumental | 4:32 | — | Laurent Boutonnat | 2005 | This instrumental version is identical to the album version, but piano and guitars are added. |
| The martyr's remix | 5:20 | — | Y-Front | 2005 | This version contains all the lyrics of the album version and has hard rock sonorities with many guitar riffs in the refrains. The rap bridge from the original version is sampled at the beginning of the remix. |
| Mother f... dub mix | 7:50 | — | Joachim Garraud | 2005 | All the lyrics from the original version are deleted, and only some 'fuck them all' are shouted throughout the remix. The musical introduction lasts four minutes. |
| Mother f... vocal club mix | 8:30 | — | Joachim Garraud | 2005 | Devoted to the nightclubs, this techno version has a musical introduction which lasts about four minutes, then Farmer almost sings a cappella. |
| Music video | 5:02 | Music Videos IV | — | 2005 |  |
| Live version\n(recorded in 2006) | 6:42 (audio)\n8:18 (video) | Avant que l'ombre... à Bercy | — | 2006 | This version is similar to the album one, with more rhythm. The DVD version is longer as it also contains the presentation of the musicians and dancers. (see Avant que l'ombre... à Bercy (tour)) |
Question:
piano and guitars are added to what version of this song?
Answer:
Instrumental