Below are such very few Hindi songs.
1. Chup Chup Ke - Movie:- Rush | Music: - Pritam
2. Hum Sey - Movie:- Humse Hai Jahan | Music:- Siddharth - Suhas
Siddharth - Suhas are known for their Rock influenced music & vocalist Suraj Jaggan, too, is known for his Rock influenced vocals. Powerful voice, though melody doesn't impress much. Lyrics are cliched as well. But I like it for that KEY-CHANGE!
3. Tum Ho Mera Pyaar - Movie:- Haunted 3D | Music:- Chirantan Bhatt
KK (yes, once again!!) sings his heart out in this soft love ballad. Song is melodious & that key-change is pronounced. Below is the lyric video. I reviewed the music album and was praised by Chirantan for that. You can read my review here.
4. Tu Na Jaane Aas Paas Hai Khuda - Movie:- Anjaana Anjaani | Music:- Vishal-Shekhar
Yet another beautiful song by Rahat Fateh Ali Khan. Yet another key-change!