if you add up the durations from left to right on any level of a note tree you end up with a what?

Is the answer a whole note?

Here is a note tree.
https://www.google.com/search?q=note+tree&client=firefox-a&hs=9jr&rls=org.mozilla:en-US:official&channel=sb&tbm=isch&imgil=kxe2MvN9QkmVEM%253A%253B0n0Qqxw9S0aUrM%253Bhttp%25253A%25252F%25252Fwww.personal.kent.edu%25252F~jrex2%25252Fmusosaurus%25252Fzmeter.html&source=iu&pf=m&fir=kxe2MvN9QkmVEM%253A%252C0n0Qqxw9S0aUrM%252C_&usg=__UbPAYKTkCuutXAaSEszR78ejgfo%3D&biw=1007&bih=601&ved=0CCkQyjc&ei=MAASVLuONcLIggSJrYCoDQ#facrc=_&imgdii=_&imgrc=kxe2MvN9QkmVEM%253A%3B0n0Qqxw9S0aUrM%3Bhttp%253A%252F%252Fwww.personal.kent.edu%252F~jrex2%252Fmusosaurus%252Fimages%252Fnote_tree.jpg%3Bhttp%253A%252F%252Fwww.personal.kent.edu%252F~jrex2%252Fmusosaurus%252Fzmeter.html%3B367%3B193

Note that four quarter notes = 1 whole note (in time)
Eight eighth notes = 1 whole note (time)
etc.

If you add up the durations from left to right on any level of a note tree, you end up with the total duration of the notes on that level. This means that the sum of all the note durations on a particular level will give you the overall duration of the musical passage represented by that level of the note tree.

To find the sum of the durations from left to right on any level of a note tree, you would need to understand the structure of the note tree and how to calculate the durations of individual notes.

1. Note Tree Structure:
A note tree represents musical notes arranged hierarchically, where each note is connected to its parent and children. At any given level, a note may have multiple child notes.

2. Duration of Individual Notes:
In music notation, notes are assigned specific durations. The most commonly used durations are:

- Whole Note: Represents the longest duration, typically held for 4 beats.
- Half Note: Represents a duration of half the whole note, typically held for 2 beats.
- Quarter Note: Represents a duration of one-quarter the whole note, typically held for 1 beat.
- Eighth Note: Represents a duration of one-eighth the whole note, typically held for half a beat.

3. Calculating the Sum:
To calculate the sum of durations from left to right on any level of a note tree, follow these steps:

- Identify the durations of the individual notes at each position, starting from the left.
- Add up the durations of all the notes on the given level from left to right.

For example, consider a note tree on a specific level:

O
/ | \
O O O

Let's say the first note on the left is a quarter note, followed by two eighth notes. Adding up their durations, we have:

1/4 note + 1/8 note + 1/8 note = 1/4 + 1/8 + 1/8 = 1/2

Therefore, the sum of the durations from left to right on this level of the note tree would be 1/2.