epic - suspenseful

Angeli Digitali - ominous intro leading to driving electronic track heightened by the haunting Brain Fever Choir.
Angeli Digitali Conclusion - closing section with half-time big beat.
Black Widow intro,  excerpt2 - slow intro leading to kinetic beat.
Wireless - arpeggiating guitar sets the somber tone at the start, and from there builds up to the apocalyptic finale.

high intensity

Votox - Huge choir intro, leading into pounding techno-rock track.  Unmistakable "Brain Fever" style here.
Alienation Part 3 - middle part of song with awesome guitar sound.
Broken Soul - huge guitar chords and beat.
RedShift - driving guitar, modern rock sound.