Did you know: "Runnin" is not the only song Tupac and Biggie recorded together

From Allmusic.com:

Eddie F. Presents - Let's Get It On: The Album

A promising venture that never realized its promise, Eddie F.'s Untouchables supergroup debuted in 1994 with Let's Get It On: The Album and then quickly dispersed, casting the producer's Untouchables Entertainment label into the depths of urban music obscurity. It was nice while it lasted, however.

(...) And there is indeed ample talent here, most notably on the title track, a now-unimaginable collabo that brought together 2Pac and the Notorious B.I.G. (along with a few other rappers: Heavy D, Grand Puba, and ? Bigga). Remember this was 1994, long before 2Pac and Biggie had begun beefing, but still, it's fascinating to hear them here on the same track, one that's mostly forgotten.

https://www.youtube.com/watch?v=XEWxuv-Xft8

[Verse 2: 2Pac]
How should I plead, forever thuggin' on a quest to get G's
Runnin' from enemies ever since the days of a seed
I'm under pressure the stress will have me drinkin'
Thinkin' ? after me, much too paranoid to blink
Wonder why the police don't wanna see me stackin' G's
They after a playa but I won't let 'em capture me
I gotta thank the lord for the weed and the nicotine
I can't sleep, close my eyes, I see wicked things
I keep my pistol by my bedside, one in the chamber
Preoccupied with homicide, my life's in danger
Rollin' down the 405, beware of stangers
Hand on my 4-5 that's what the fame does
I'm probably wrong but I'll never know it til I'm gone
From out the ghetto where the jealous ? roam
Pass the weed let that Hennessey get to me
Before the penitentiary
Let's get it on

[Verse 4: Notorious B.I.G.]
? know who's the mind blower, the weed grower
Have you seen doubles like Noah, the rhyme flower
B.I.G. top notch with the Glock check your pockets
And your sockets it's just the way my pops taught me
When you throw the drop check 'em throughly
The bastard might spin around and try to bury me
And dead ? don't make no moves
When I'm slingin' in the hood I don't fake no moves, aight
Reminiscin' on my swinger days
When I drove a Caddy and my ? sported finger waves
Yeah, she had the Gucci roots I had Carducci Suits
Oshkosh-begosh, Coca-Cola, lookin' real cute
Junior M.A.F.I.A. representin' Bucktown
MAC-11 cocked back ? better duck down
Face down you know the routine the cream
Earrings you know the drama Biggie bring
Let's get it on