1920 Evil Returns contains 5 songs in total.
*1) Apnaa Mujhe Tu Lagaa - Sonu Nigam
2) Uska Hi Banana - Arijit Singh
3) Jaavedaan Hai - K.K, Suzanne D’mello
4) Khud Ko Tere - Mahalaxmi Iyer
5) Majboor Tu Bhi Kahin - Amit Mishra*
In a single word, all the five are superb in melody. All of them, are romantic sweet songs, with a touch of melancholy which makes them even more beautiful to hear. If you hear them all at a stretch, they seem to be parts of a great bigger tale, still different from each other.
As told, it is just impossible to find which is best among them, still personally my favourite is no 3 , 4 , and 5.
For originality, well, it can not be said to be much innovative, but the melody fills all the gaps up.