The phrase "as heard before" is correct and usable in written English.
It can be used to refer to something that has been mentioned or stated previously in a conversation or text.
Example: "The concept of sustainability is crucial, as heard before in our previous meetings."
Alternatives: "as mentioned earlier" or "as stated previously".
It is a tale we have heard before, as recently as a year ago.
Start hitting up places where you can buy vinyl cheaply and reliably, and start learning to look for deep-cuts and grooves that nobody's heard before, as well as the latest in electronic and dance music.
Some of the music has been heard before, as well.
"I just recognised this scene of a boy talking to his horse as something I'd heard before," he says.
The result is a work that sounds like something you've heard before, as Jeff Weiss said: "like a Young Thug impersonator singing the entirety of 808s & Heartbreak at Karaoke".
And I dismissed the Nation of Islam's demand for a separate black economy in America, which I had also heard before, as willful, and even mischievous, nonsense.
There will be at least one line that I'll feel I've never heard before, as if it had been waiting for centuries for just this particular reading by this particular actor.
To celebrate the 75th anniversary of the publication of "Their Eyes Were Watching God," that Zora Neale Hurston novel will be presented in a way that American audiences have not seen or heard before: as a radio play.
In a classic 1979 paper in the journal Language, "When Nouns Surface as Verbs," Eve V. Clark and Herbert H. Clark observed that "people readily create and understand denominal verbs they have never heard before, as in to porch a newspaper and to Houdini one's way out of a closet".
Given what people have heard before, as they listen they can almost spin the slow, deliberate words of the message into singing, and the singing into an elegant orchestration of slow, deliberate chords -- something that years from now they won't be able to get out of their heads.
