They have scored 71 goals so far while conceeding only 25, with their +46 differential dwarfing the statistics of the conference's current second-placed team Fresno FC (13-8-4, +16).
The team is also being embraced by its community as Phoenix average just over 6700 fans for their home games at Casino Arizona Field, which is a privately-funded temporary stadium that officially has seating capacity for 6200.
The club will build a permanent facility if they are promoted into Major League Soccer (MLS), having first applied in 2017 to be considered if MLS is expanded, although four other clubs have been chosen to join from 2020 to 2022.
So far in the 2019 season, Musa has made 21 appearances, 15 of them as a starter.
In his 1339 minutes, he has scored two goals from three shots on target, both with his left foot, plus one goal assist.
The team's captain Solomon Asante has scored 20 goals so far, a club record.
Musa is part of a defence in front of goal keeper Zac Lubin that has helped him keep 12 clean sheets so far this season.