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  1. Home
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  3. T-071086556-7

ISWC · Musical Work

T-071086556-7

It's Hard to Know

2 recordings

Last verified: July 21, 2026

T-071086556-7 is the International Standard Musical Work Code (ISWC) for the musical composition "It's Hard to Know". ISWCs are ISO 15707 identifiers managed by CISAC; they identify the underlying song — its melody, lyrics, and arrangement — rather than any single recording. One composition can have many recordings (ISRCs). This work has 2 known recordings (ISRCs) indexed on Credits.fm.

Format

TPrefix
071086556Work number
7Check digit
Prefix:
"T" = musical work; "W" = work in progress.
Work number:
9-digit unique work number assigned by CISAC.
Check digit:
ISO 7064 Mod 11-2 check digit that validates the rest of the code.

Credit Chain

ISRC2 recordings
ISWCIt's Hard to Know

Previously known as

T-305721197-5
SourcesMusicBrainzCISAC✓2 sources

Verified on

  • CISAC ISWC registry search

Identifier Graph

ISWCIt's Hard to Kn…ISRCQMRSZ1700067ISRCQMRSZ1700141

People also ask

What is ISWC T-071086556-7?+
ISWC T-071086556-7 identifies the musical composition "It's Hard to Know". ISWCs are defined by ISO 15707 and managed by CISAC to uniquely identify the underlying song — the melody, lyrics, and arrangement.
How many recordings use ISWC T-071086556-7?+
ISWC T-071086556-7 has 2 recordings (ISRCs) associated with it. Each recording is a distinct version — such as the original, a remix, a live performance, or a cover — that shares the same underlying composition.
How is an ISWC different from an ISRC?+
An ISWC identifies a musical work (the underlying composition — melody, lyrics, arrangement). An ISRC identifies a specific sound recording of that work. One ISWC can have many ISRCs — for example, the original recording, a remix, a live version, and a cover would each have their own ISRC but share the same ISWC.

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What is ISWC T-071086556-7?

T-071086556-7 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition "It's Hard to Know". ISWCs are defined by ISO 15707 and managed by CISAC. Unlike ISRCs which identify recordings, an ISWC identifies the underlying song — the melody, lyrics, and arrangement.

This work has 2 recordings (ISRCs) associated with it. Each recording represents a distinct version — such as the original, a remix, a live performance, or a cover — that shares the same underlying composition.

Learn more about ISWCs · Powered by Notes.fm

Which releases contain this work? (5)

Live in Chicago

Hot Water Music

06337570280292013-02-08

Live in Chicago

Hot Water Music

40505382699322017-01-27

No Division

Hot Water Music

40505382667022017-01-24

No Division

Hot Water Music

6391111011241999-01-01

20th Anniversary Collection

Hot Water Music

8195310124262015-01-01

Recordings (2)

1
Hard to Know

Hot Water Music

QMRSZ1700141
On release:Live in Chicago(0633757028029)
2
It’s Hard to Know

Hot Water Music

QMRSZ1700067

Who are the artists on this work?

Hot Water Music

MLC Song Code

IVD9JO
Verify on MLC Portal →