Bard Masterpieces - At the Heart of It All. Target need to be present?

[Dansun]

From PF Ultimate Magic rulebook, Bard Masterpieces:

At the Heart of It All (String, Wind)

Your song pierces to the heart of a creature's identity, weakening it against you.

Prerequisite: Perform (string) or Perform (wind) 7 ranks.
Cost: Feat or 3rd-level bard spell known.

Effect: This haunting melody teases at the veils of understanding and drills into the bedrock of truth. Upon completing this performance, the target attempts a Will save. Failure means you understand the target's primal nature; you gain a +4 bonus on Charisma-based checks to influence the target, and the DCs of your abilities and spells that would influence the creature or its actions (including charm and compulsion effects) increase by +2. These bonuses last for 1 day.

You must have an idea of who the creature is when you begin to play the song, either through researching the creature or by observing it directly from no farther than 100 feet.

Use: 5 rounds of bardic performance.
Action: 5 full rounds.

Unless otherwise stated, effects or feats that extend the duration of bardic performance (such as the Lingering Performance feat) do not apply to masterpieces.
GMs can use these masterpieces to inspire their own ideas for other masterpieces. Masterpieces should generally be no more powerful than a cleric or sorcerer/wizard spell available to a caster of the same level as the minimum level needed to select the masterpiece (a masterpiece requiring 7 ranks in Perform requires a 7th-level bard, and thus should not be more powerful than a 4th-level cleric or sorcerer/wizard spell).

It seems like this Bard Masterpiece is more like a spell than a performance since feats cannot be applied to them and they are of greater power and you sacrifice a learned spell for it.

So this seems to me that you only have to have breifly studied the target in order to use this performance. And you can then later do the performance at any range away from the target like a divination since you do not even need to have actually viewed the target.

Any thoughts?