Here are all the songs that Zhavia sang in The Four Season 1 Episodes 1 to 6 (in chronological order:
Location (by Khalid) as her audition song in Episode 1
Unforgettable (by French Montana)
Free Your Mind (short clip) intro Episode 2
Bang Bang with group as intro song Episode 3
Killing Me Softly ( by Roberta Flack)
Finesse with group intro Episode 4
Diamonds (by Rihanna)
Bodak Yellow (by Cardi B) Episode 5
Say Something (by A Great Big World)
Edge of Glory
One Dance (by Drake) Finale
Man Down (by Rihanna)

Zhavia background story - Who is she? Get to know her.
The Four Season 1 Finale

The Four official website: https://www.thefourmusic.com/