Movie: Gang of Ghosts
Lyrics: Satish Kaushik
Singer: Roopmatii Jolly
This one is a completely retro looking black and white song where Mahi Gill seems to be copying Madhubala, and Chunky Pandey is trying to looking something of a Gurudutt. Either way, the song is an interesting one. The video is here too.
Movie: Ragini MMS 2
Music and Singer: Yo Yo Honey Singh
Lyrics: Ustad Bhagdarh Ali Khan Sahab [Now that's clearly a fake name, wondering if it's an alter ego of Honey Singh himself, considering lyrics are very much the same as written by him.]
Movie: Total Siyappa
Music: Ali Zafar
Lyrics: Aqeel Rubi
Singer: Ali Zafar, Fariha Parvez
This one is something like imported from Pakistan as we have leading Pakistani singer Fariha Pervez supporting Ali in a song, and Aqeel Rubi writing the lyrics. An interesting combination, which probably hasn't been seen before.
Movie: Shaadi ke Side Effects
Music: Original composition by Alam Lohar, directed by Pritam
New Lyrics: Mayur Puri
Singers: Alam Lohar [only the line main vyah karke pachhtaya in the beginning], Shahid Mallya, Poorvi Koutish