Ottava Bassa
Definition. Octave lower — instruction to play the marked passage one octave lower than written. Notated *8vb*.
Detailed Explanation
Ottava bassa (abbreviated 8vb or 8va bassa) is Italian for ‘low octave’. As a performance direction it instructs the performer to play the marked passage one octave lower than written. The marking is typically shown as ‘8vb’ below the staff with a dashed line extending to indicate the affected section.
Like ottava (8va), this direction simplifies notation by avoiding excessive ledger lines. A bass passage that would require many ledger lines below the staff can be written within normal range with an 8vb indication. The performer mentally transposes the indicated section down an octave.
The direction is most common in bass-clef writing, especially for piano left hand and double bass. ‘Loco’ cancels the marking, returning to normal-octave reading.
Etymology
Italian, ‘low octave’ — ottava + bassa (‘low, bass’).
In Practice
Play one octave lower than the written notes throughout the dashed line. When the line ends or loco appears, return to normal-octave reading.
Notable Examples
- Most piano music — Bass passages (common in left-hand notation)
Related Terms
Opposite Of
Frequently Asked Questions
What does Ottava Bassa mean in music?
Octave lower — instruction to play the marked passage one octave lower than written. Notated 8vb.
Where does the word Ottava Bassa come from?
Italian, ‘low octave’ — ottava + bassa (‘low, bass’).
How is Ottava Bassa performed in practice?
Play one octave lower than the written notes throughout the dashed line. When the line ends or loco appears, return to normal-octave reading.
What are common abbreviations for Ottava Bassa?
Ottava Bassa is commonly abbreviated as 8vb.
What musical terms are related to Ottava Bassa?
Related terms include: Ottava, Loco.
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