Wow, thanks a lot for the awesome feedback. It is a boss fight theme.
Concerning the counting: I'm a metal drummer and used to compose symphonic metal songs. Basically it's a symphonic metal song with synths instead of guitars.
I actually had this "synthie riff" in 5/4 just playing in my head suddenly and I had to record it.
It actually starts on count "4", so that the 3rd note hits on 1. Then it basically follows the same structure like a metal song: Verse, bridge, verse, bridge, chorus, verse, bridge, break, bridge, chorus. The verse and chorus are basically creating tension and the chorus is a kind of release.
Verse: 5/4
Bridge: 6/4
Chorus:4/4
The counting in the break is 16/4, dissected into 6/4, 6/4 and 4/4.
Greetings