Mechanical & Performance

The Math of Track Duration (Long Song Rule)

The statutory calculation rule for physical and digital download mechanical royalties for songs longer than 5 minutes.

The Statutory Long Song Rule

Under the regulations set by the Copyright Royalty Board (CRB), physical formats (vinyl, CD, cassette) and permanent digital downloads (PDDs) are subject to a dual-rate statutory mechanic:

  • For tracks 5 minutes or under: The flat statutory mechanical rate is applied (e.g., 12.4¢ in 2024).
  • For tracks over 5 minutes: The Long Song Rule is triggered. Instead of the flat rate, you round any fraction of a minute *upward* to the next whole minute and multiply by the statutory per-minute rate (e.g., $0.0239 in 2024).

The royalty owed per composition is whichever is greater of the two rates.

Mathematical Definition Let: - $U$ = Units sold/distributed - $F$ = Statutory flat rate ($0.1240 for 2024) - $M$ = Per-minute rate ($0.0239 for 2024) - $D$ = Track duration in seconds

$$\text{Royalty} = U \times \max(F, M \times \lceil D / 60 \rceil)$$

Practical Walkthrough If an epic track is 8 minutes and 15 seconds long: 1. Divide seconds by 60 and round up: $\lceil 495 / 60 \rceil = 9$ minutes. 2. Multiply by the per-minute rate: $9 \times \$0.0239 = \$0.2151$. 3. Compare to flat rate: $\$0.2151 > \$0.1240$. 4. The statutory mechanical royalty is $0.2151 per unit sold.

Legal Citations & Known Aliases

37 C.F.R. § 385.11long song mathvinyl pressing mathper minute mechanical rateLSR

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