|Date of birth||21 June 1971|
|Place of birth||Mostar, SFR Yugoslavia|
|Bosnia and Herzegovina (assistant)|
|2002–2004||Zrinjski Mostar (assistant)|
|2018–2020||Bosnia and Herzegovina U19|
|2020–||Bosnia and Herzegovina (assistant)|
|* Senior club appearances and goals counted for the domestic league only|
Musa is mostly known for playing for Zrinjski Mostar, spending 6 years in total at the club, from 1992 to 1993 and from 1997 to 2002.
Musla also played for Šibenik and Široki Brijeg. In 1997, he returned to Zrinjski, where he played the last 5 years of his career. He was one of the club's best players at the time. In 2001, Musa received the trophy "Filip Šunjić - Pipa" as best player of the club on field and outside of it for the 2000–01 season.
In the media he was often emphasizing his love for the club and its supporters. In 2002, Musa finished his playing career at the age of only 31.
After finishing his playing career, Musa was an assistant coach at Zrinjski Mostar in the seasons 2002–03 and 2003–04. He led the first team in one match. After Zrinjski, he went to Branitelj and stayed the club manager for 4 years. In the meantime, Musa earned an UEFA Pro Licence.
His ambition was to be the manager of bigger clubs in the country, like Široki Brijeg or Zrinjski one day. In 2010, Musa and his team Branitelj made a sensation, by eliminating Premier League club Leotar from the Bosnian Cup.
In November 2010, he was appointed as Zrinjski manager, and his longtime wish finally came true. He stayed as manager of Zrinjski for about two years, before resigning after not as good results as he hoped six rounds before the end of the 2011–12 league season.
The same year Musa became the new manager of Široki Brijeg. In his first season with the club he won the Bosnian Cup beating Željezničar on penalties. After 3 years of managing Široki Brijeg, in April 2015, Musa was sacked. Though, after only 5 months after his firing, he was once again named manager of Široki. On his own behalf, he left the club in July 2016.
In June 2018, Musa became the new head coach of the Bosnia and Herzegovina U-19 national team. On 25 January 2020, he was named as an assistant of Bosnia and Herzegovina national team head coach Dušan Bajević, which ultimately led him to leave the position of under-19 national team head coach.
- "Musa resigned" (in Bosnian). SportSport.ba. Retrieved 30 April 2012.
- "Slaven Musa new manager of GOŠK" (in Bosnian). SportSport.ba. Retrieved 1 July 2012.
- Slaven Musa na klupi Širokog Brijega at sportsport.ba, 13 August 2012
- Boljim izvođenjem penala Široki osvojio Kup BiH at klix.ba, 14 May 2013
- Smijenjen trener Širokog Brijega Slaven Musa at klix.ba, 19 April 2015
- Slaven Musa ponovo na klupi Širokog Brijega at klix.ba, 10 September 2015
- Slaven Musa podnio ostavku nakon ispadanja Širokog iz Evrope at klix.ba, 5 July 2016
- ZVANIČNO Slaven Musa novi selektor U19 BiH at bih.ba, 19 June 2018
- A. Pašić (25 January 2020). "Dušan Bajević odabrao pomoćnike!" (in Bosnian). sportsport.ba. Retrieved 25 January 2020.
- Slaven Musa at Soccerway