"I'll Be Missing You" is a Grammy Award Winning song and hit single recorded by Puff Daddy and Faith Evans featuring 112, in memory of fellow Bad Boy Records artist Notorious B.I.G. who was murdered on March 9, 1997. Released as the second single from Puff Daddy and the Family's No Way Outalbum, "I'll Be Missing You" sampled the melody of The Police's "Every Breath You Take" from 1983.

The song was listed at #84 on Billboard's Greatest Songs of All Time.

The song, a rap ballad, had already been completed before permission was granted to use the sample from the 1983 song. As well as these artists, Sting (vocalist from The Police) joined in at the 1997 MTV Video Music Awards. Sting owns 100% of the publishing royalties. The single however was not written by Puff Daddy but by Terry "Sauce Money" Carroll, a rapper from the Marcy Projects in Brooklyn who received a Grammy for his efforts in 1997.

As well as using the melody and arrangement of "Every Breath You take" the single also borrows the melody from the well-known American spiritual "I'll Fly Away."

There are several different versions of this song. One being an extended version (choir at beginning), another without the choir and an instrumental version. In the extended version, the song the choir is heard singing in the beginning is "Adagio for Strings" by Samuel Barber.

A slightly altered version of the song was performed by Diddy at the Concert for Diana in Wembley, United Kingdom.

"I'll Be Missing You" topped many charts across the world. It reached number one in the U.S., UK, Australia, Canada, Germany, Italy, Netherlands, and New Zealand. This song is one of the few to debut at #1 in the U.S. on the Hot 100.

The song re-entered the UK Singles Chart at #32 on July 8, 2007, ten years after it had its full physical release and 10 years after it was #1.

Blendermagazine ranked the song at #25 on its list of the "50 Worst Songs Ever", calling it "a nauseating brew of of gloopy sentimentality and strategic-marketing mawkishness."