A Timeline of Helena's Emotions
Theme: Love is complicated
#1: Still Into You - Paramore
#2: Rather Be - Clean Bandit ft. Jess Glynne
#3: Dernière Danse - Indila
Oh my sweet torment,
No point in fighting, you start again
I'm but a meaningless being
Without him I'm a bit troubled
I wander around alone on the subway
I feel like this section and this section only applies to Helena. The rest of the song is about her moving on and running away from "him," but that doesn't happen in Helena's case. These selected lyrics explain just how much Helena is attached to Demetrius, and even though he keeps pushing her away, she can't live without him. The overall tone of the song applies to Helena's emotions, too. It's powerful, and determined, which is how she tries to feel around Demetrius (of course it doesn't work).
#4: Maps - Maroon 5
#5: Clarity - Zedd ft. Foxes
#6: Need You Right Now - Bethany Mota
Like a thief you robbed me in the dark
But I thought I locked all the doors
You told me we didn't have that spark
Then you burned me to the core, yeah
I definitely think that Helena would listen to this part of the song the most often. These lyrics basically sum up all of Helena's emotions right before Lysander and Demetrius argue over Helena. I'd consider this the peak of Helena's jealousy, and at this point she's really desperate. The tune, not so much. It's a little too bright for this situation. But the lyrics have a lot of meaning.
#7: Mean - Taylor Swift
I believe that this entire song represents Helena's feelings toward Lysander when he's cursed and in love with her. The song is really repetitive in my opinion, and I think that's how Helena's trying to drown him out. By now, she's not really taking it too seriously. But things are about to change when Demetrius joins in and starts arguing with Lysander, which is the next song.