The next rehearsal went all right

Every morning when I [open] the Lang-8, I correct the my friends' Japanese sentences from my friends with pleasure.

"open" isn't wrong, but "log on to" would be more natural.

This is really a lot of fun for me, but it certainly takes from me a lot of time and energy, and as a result, after checking correcting a number of sentences, I find myself lacking in any more the energy left to write in my own journal.

"It takes me X" may look very strange, but it's correct. (The grammar is an artifact of back when English had cases!)

I should start writing in my own journal before reading other people's!

"people" is already plural, so the possessive apostrophe goes before the s.

In my last entry I wrote what a hard time I had to go through in the during my ensemble's rehearsal I belong to.

We rehearsed a new song a song that was new for everybody last time, but I happened to be the only alto member (each part consisting of three people), and since I had not practiced enough, expecting the other two to lead me, I became the target of the conductor's severe training.

The soprano sitting next to me asked the person next to her to change seats, as if to say she could not stand my poor performance any longer, which hurt me terribly.

A minor style change.

The accident incident happened about five weeks ago, and yesterday we met for the first time since then.

It wasn't really what we think of as an "accident."

Our ensemble is a small group consisting of about 15 members inside our larger chorus group of about 50. and The larger group rehearses in the daytime during the day, while and the smaller ensemble practices in the evening on the same day during those same evenings, since the conductor is the same person and wants to lead us both in one day.

I split this into two sentences. That and the other corrections are to sound more natural (except for "rehearses" and "practices", which are definitely required.)

Yesterday, one of the other two altos of in the ensemble team left early before the larger group finished rehearsing.

I had had a cold for a week, and I still couldn't produce a good voice yesterday, so I thought of making it an my excuse to retire.

She had come late, but I didn't know hadn't known it, since she was sitting behind me.

I'll let her sing in a loud voice in my place, so I'll and just accompany her, I decided.

Of course I had practiced this song again and again before coming to the rehearsal, so as no to not embarrass myself again!

A tenor person who had escaped missed the last rehearsal came back, and he had to practice harder to catch up.

Also there was a new member in singing bass, so she had to take use some more energy to check on these people.

[The lesson was over all right.]

I'm not sure whether to correct this as "The lesson ended well," "The lesson ended without anything bad happening," "The lesson ended up being all right," or some other variant.

This is really a lot of fun for me, but it certainly takes from me a lot of time and energy, and as a result, after checking a number of sentences, I was exhausted to write my own journal.

I decide to write my own journal before reading other peoples'!

In order to improve my own English writing skill, I shoud write something, little by little, even it's just a trifle, right?

We rehearsed a new song for everybody last ime, but I happened to be the only alto member (each part consisting of three people), and since I had not practiced enough, expecting the other two to lead me, I was scolded hardly by the demanding conductor.

You are not wrong, I just offer another expression.

I determined that I'd never go there again should I be the only alto who could be there.

I had been suffering from a cold for a week, and my throat still hurt, so I thought of making it an excuse to retire.

When I looked up, I found the other alto member of the ensemble was there.

She was late, but I didn't know it, since she was sitting behind me.

"Why don't you try to experience the hardship I went through last time?" I said to her jokingly.

At the rehearsal the conductor criticized me only once about my wrong rhythm.

A tenor who had skipped the last rehearsal came back, and he had to practice harder to catch up.

The lesson was over smoothly.

The alto member with me said, "Everything was all right, eh?" It was.

But what I had gone through was nothing but a bully for sure.

It was a good lesson for me as a teacher.

Would it not mean that I was 'defeated' by such a minor incident if I were to be away?

This sentence is right! I just wanted to say that most people say "Wouldn't it" instead of "Would it not.."

In order to improve my own English writing skills, I shoud write something about anything, little by little, right?

We rehearsed a song that was new for everybody last time, but I happened to be the only alto member (each part consists of three people), and since I had not practiced enough, expecting the other two to lead me, I became the target of the conductor's wrath.

Here is yet another expression. The object of his wrath....

The soprano sitting next to me asked the person next to her to change seats, as if to say she could not stand my poor performance any longer, which really hurt my feelings.

Yesterday, one of the other two altos on the ensemble team left early before the larger group finished rehearsing.

I was determined that I'd never go there again if I was the only alto who could be there.

As the larger group's rehearsal was going on, I wondered if I should really take the day off.

We usually don't say take absence.

Wouldn't it mean that I was 'defeated' by a minor incident if I weren't there?

I had had cold a for a week, and I still couldn't produce a good voice yesterday, so I thought of making it an excuse to leave.

Retire, unless talking about going to sleep, usually means leaving a profession or group for good.

At the rehearsal, the conductor criticized me only once about my wrong rhythm.

Torture is more physical. Like beatings or extremely cruel mental treatment.

Also there was a new member singing bass, so she was busy checking up on their performances.

The lesson went by smoothly.

But I am certain the other member was bullying me.

I hope that soon I will be able to heal from this mental wound.