Scott Storch -- one of the BIGGEST producers in hip hop -- says Amy Winehouse"should have listened to her own song" ... and checked herself into rehab before she died.
Storch would know ... the man who's worked with Dr. Dre, Snoop, Beyonce, Xtina, P!nk and more battled a HUGE cocaine addiction over the years. In fact, Storch says he blew nearly $30 million on the drug before he finally sought help and kicked the habit.
On his way into Trousdale nightclub in Hollywood last night, we asked Storch about Amy ... and he told us, "Rest in peace ... Drugs are f**ked up ... I learned my own lesson too."
Amy Winehouse's ex-husband, Blake Fielder-Civil is anguishing, because he believes he could have saved Amy.
Blake's dad, Larry Fielder, tells TMZ ... his son knew better than anyone the depth of Amy's drug addiction, and had planned to stage an intervention of sorts when he got out of jail -- the problem ... he's locked up until March, 2012.
There's obviously another issue -- Blake and Amy were famously co-dependent junkies and neither seemed capable of helping the other during their marriage.
Larry tells us ... shortly after Amy died Blake called him, crying hysterically. Blake's current girlfriend, Sarah, visited him in jail recently for an hour and all Blake did was cry.
In one final bizarre photo op with Amy Winehouse, the singer's former bodyguards posed with a box containing Amy's ashes as they left the crematorium in London earlier today...a family rep confirms to TMZ.
The man in the center of the photo is Andrew Morris -- the bodyguard who found Winehouse's body and called for help.
Amy Winehouse's funeral is underway at a cemetery in North London -- and, Mark Ronson -- who produced most of her "Back to Black" album -- and Kelly Osbourne have arrived to pay their respects.
As a tribute to Amy .... Osbourne showed up to the Edgwarebury Cemetery wearing the singer's signature beehive style hairdo.
As for who's NOT showing up, sources tell TMZ her ex-husband, Blake Fielder-Civil -- who's currently serving 32 months in prison for burglary and possession of an imitation firearm -- was denied release to attend the funeral.
Amy was found dead on Saturday at her home in London -- the cause of death has not been determined.
Amy Winehouse's death made her 100 times more popular ... at least on the Internet -- because TMZ has learned, online radio station Pandora went off the charts with Winehouse requests last weekend.
A rep for Pandora -- VP of Communication Deborah Roth -- tells TMZ, users typically create between 700-900 Amy Winehouse radio stations every day ... but on Saturday, that number skyrocketed to 75,000!!!
Amanda Bynes' arrest has most people thinking she's totally losing it ... especially after her wigtastic court appearance! But is she really off the rails -- you've gotta hear the new info we uncovered. Plus, war on the Jersey shore ... Snooki and Governor Chris Christie went…