Some people are hoping it is a placeholder music at the least.
What does this mean? The speaker is talking about game music.
Grammatically, 'a' doesn't really fit here. I'm not that sure I know what the expression is supposed to mean but a 'placeholder' in other senses stands in the stead of something else, often on a temporary basis. This music could be something that is playing while the game loads up rather than having a very specific link to the action of the game; it is providing sound to cover the gap in game-play.
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Grammatically, 'a' doesn't really fit here. I'm not that sure I know what the expression is supposed to mean but a 'placeholder' in other senses stands in the stead of something else, often on a temporary basis.
This music could be something that is playing while the game loads up rather than having a very specific link to the action of the game; it is providing sound to cover the gap