Subject of this たら...た construction


For full context see here:
<https://www.docdroid.net/5vuuiCe/img-20170821-0002-new.pdf>

The sentence in question (line 6-7): 音の高さ速さをその人に合わせて録音してあげたら、喜んでくれた。

The main issue lies in determining wether Mr. Inoue or the customer is the
subject of the verbal complex 喜んでくれた. First, here's my attempt at translation:
"When he (Mr. Inoue) did the favor of making a record matching the pitch and
speed of the man, he (???) gave the favor of being pleased much/pleasing
much/accepting very gratefully." I think considering the difference between
くれる and あげる in terms of courtesy could help here. By context, Mr. Inoue must
be the subject of the sentence preceding あげたら, so the text assumes that Mr.
Inoue positions himself lower than the customer, which makes sense. くれる is
neutral as far as I know, so considering the pretext, this would fit the
customer. Still, since all this is narrated by an external narrator, I feel
pretty unsure about my interpretations. So I think the sentence should
mean:"..., the customer gave the favor of being very pleased."




The subject of 録音してあげた is 井上さん, and the subjec of 喜んでくれた is その人 (or 店の客).

> **井上さんが** 音の高さ速さをその人に合わせて録音してあげたら、 **その人は** 喜んでくれた。

The contrast of あげた and くれた is enough to determine the implied subjects here.
"He (the customer) gave Inoue the favor of being pleased" may not be the most
natural sentence, but the gist is that the customer was pleased ("喜んで"), and
that fact in turn pleased Inoue-san ("くれた").

あげる/くれる can be safely used when the narrator says something from someone
else's standpoint. The main character of this essay is Inoue-san, so the
narrator is using あげる/くれる from Inoue-san's point of view.




The subject of 録音してあげた is 井上さん, and the subjec of 喜んでくれた is その人 (or 店の客).

> **井上さんが** 音の高さ速さをその人に合わせて録音してあげたら、 **その人は** 喜んでくれた。

The contrast of あげた and くれた is enough to determine the implied subjects here.
"He (the customer) gave Inoue the favor of being pleased" may not be the most
natural sentence, but the gist is that the customer was pleased ("喜んで"), and
that fact in turn pleased Inoue-san ("くれた").

あげる/くれる can be safely used when the narrator says something from someone
else's standpoint. The main character of this essay is Inoue-san, so the
narrator is using あげる/くれる from Inoue-san's point of view.

