# Adding brackets (or parentheses) to end character

**URL:** <https://community.mp3tag.de/t/adding-brackets-or-parentheses-to-end-character/65149>\
**Category:** Support\
**Created:** [June 27, 2024, 8:06pm UTC](https://community.mp3tag.de/t/adding-brackets-or-parentheses-to-end-character/65149 "2024-06-27T20:06:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cmach1](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/c/46a35a/32.png) [@cmach1](https://community.mp3tag.de/u/cmach1)\
**Post date:** [June 27, 2024, 8:06pm UTC](https://community.mp3tag.de/t/adding-brackets-or-parentheses-to-end-character/65149/1 "2024-06-27T20:06:28Z")

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I have a series of files that cycle end letters (A, B, C, D, ect.) and then start over again on the next set of files. I would like to be able to add brackets `[]` around the letters and also make the letters lower case. How can this be done?

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**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [June 27, 2024, 8:08pm UTC](https://community.mp3tag.de/t/adding-brackets-or-parentheses-to-end-character/65149/2 "2024-06-27T20:08:11Z")

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What have you done so far?  
And why didn't you do it when you applied this procedure?

> [@What am I doing wrong here? (i.e. inserting incremental letter)](https://community.mp3tag.de/t/what-am-i-doing-wrong-here-i-e-inserting-incremental-letter/65127):
>
> I'm trying to insert an incremental letter on multiple files. For example: A04a Bongo Sounds A04b Bongo Sounds I would like to put a capital A at the end of the first file, a capital B at the end of the second file and so on. I'm using this string in filename - filename: $char($add($num(%1,1),65)) But all it does is place an "A" at the end of each file. Is the string not accurate? I don't want the same letter repeated for every file. I want the letter to adjust incrementally.

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**Author:** ![LyricsLover](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/c6cbf5/32.png) [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)\
**Post date:** [June 28, 2024, 6:55am UTC](https://community.mp3tag.de/t/adding-brackets-or-parentheses-to-end-character/65149/3 "2024-06-28T06:55:55Z")

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> [@cmach1](#):
>
> make the letters lower case.

Why do you not use this approach?

> [@How to get an incremental letter](https://community.mp3tag.de/t/how-to-get-an-incremental-letter/64970):
>
> I want to insert a lowercase letter as the fourth character in a list of filenames. I thought I put the right string in, but it just gives me the same letter (in this case 'a') over and over again. I want the letter to increase by one for each file. So track 2 should have a 'b', track 3 a 'c', ect. This is what I used: A1.$char($add($num(%1,1),97)) %2 The lowercase letter comes after A1. The 97 indicates the lowercase 'a', but what am I not doing right to get that letter to increase for ea…

If you show us some real examples, this would help to make suggestions.

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**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [July 28, 2024, 6:56am UTC](https://community.mp3tag.de/t/adding-brackets-or-parentheses-to-end-character/65149/4 "2024-07-28T06:56:29Z")

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