Hah! Only the date of birth allowed a Mukesh song to come in finally! Kabhi Kabhie was Mukeshji's last comeback, in which music directors who didn't use Mukeshji's vocals (Rajesh Roshan, R.D. Burman, as well as some of the faster compositions by L-P, K-A, etc.) finally needed Mukeshji. Alas, he didn't live too long to see that.
Also, Janbaaz was NOT released in 1987. It was released a year before. I think "Tera Saath Hai Kitna Pyara" would have been more of a suitable song to sing as a jodi, instead of Har Kisi Ko Nahin Milta. Tera Saath Hai has Kishore Kumar and Sapna Mukherji singing. It's a very sweet song and one of the finest K-A tunes.
Also, the Mr. India song "Kate Nahin Kat-te Yeh Din Ye Raat" was originally sung by Kishore Kumar and Alisha Chinoy. It is simply amazing how Kishoreda modulates his voice. If you look at the picturization of the song, Kishoreda definitely did justice, as it's in the night and he sings in a whisper tone, except for the beginning lines of the refrain.