Bsrgvty

You can also use ffprobe which is part of ffmpeg.

sudo apt-get install ffmpeg
ffprobe file.mp3

If you don't want other information, like track length and so on, you can combine the output with grep:

ffprobe file.mp3 2>&1 | grep -A90 'Metadata:'

Or in order to get only the author:

ffprobe -loglevel error -show_entries format_tags=artist -of default=noprint_wrappers=1:nokey=1 file.mp3

You can select other tags by separating them with a comma, such as format_tags=title,album.

I wanted to search for a keyword in all mp3 files in a folder. The folder had 486 files, so it became interesting to know which of the solutions mentioned here is the fastest. Here is the loop I used:

# sudo apt-get install ffmpeg lltag eyed3 mp3info id3v2 libimage-exiftool-perl libid3-tools id3tool

keyword='fill_me_in'

getTitleFF() ffprobe "$1" 2>&1 
getTitleLL() sed -nE 's/^ TITLE=(.*)/1/p'; 
getTitleEyed() p'; 
getTitleInfo() mp3info -p %t "$1"; 
getTitleId3() Title *): (.*)/2/p'; 
getTitleExif() exiftool -title -b "$1"; 
getTitleId3i() id3info "$1" 
getTitleTool() id3tool "$1" 

for prog in FF LL Eyed Info Id3 Exif Id3i Tool; do
 echo "=== getTitle$prog ==="
 time 
 for file in *.mp3; do 
 if "getTitle$prog" "$file" | grep -q "$keyword"; then 
 echo "$file"
 fi
 done
done

Notes:

• 
  lltag and mp3info don't find a title, because the files I was using had ID3v2 tags, see the comment by @s-prasanth: How to read mp3 tags in shell?
  


• 
  eyeD3 is problematic to use programmatically, because it uses color codes (boldness).


• 
  eyeD3 and also id3v2 (but only for ID3 v1 tags) return the title and the artist on the same line, which further complicates things; therefore getTitleEyed and sometimes getTitleId3 return both the title and the artist, so please don't copy-paste those functions.


• 
  

  getTitleId3 will only work for ID3 v2 tags, because id3v2 has different formats for ID3v1- and ID3v2-tags, i.e.

  
  
  

  Title : Artist: 
  

  
  
  

  vs. ID3v2:

  
  
  

  TIT2 (Title/songname/content description): 
  

  
  


• 
  

  As the only program of these 5 eyeD3 prints a red warning for two of the files:

  
  
  

  Invalid mode/bitrate combination for layer II
  No ID3 v1.x/v2.x tag found!
  

  
  
  

  It seems like those two files have ID3v1 tags, because those two files are the only ones where lltag and mp3info can get a title. I'm wondering if this is a bug in eyeD3 as no other program mentioned here has a problem with these files ...

  
  

Results (real time):

 Program | Version | Time / s
----------+------------+-----------
 exiftool | 10.25 | 49.5 ± 0.5
 lltag | 0.14.5 | 41 ± 1.0
 ffprobe | 3.1.3-1+b3 | 33 ± 0.5
 eyeD3 | 0.6.18 | 24 ± 0.5
 id3info | 3.8.3 | 4.2 ± 0.1
 id3v2 | 0.1.12 | 2.9 ± 0.1
 id3tool | 1.2a | 1.7 ± 0.1
 mp3info | 0.8.5a | 1.4 ± 0.1

Time-wise the winner here is id3tool (mp3info is faster, but doesn't work with ID3 v2).
id3v2 is also quite fast, but the getTitleId3 function would need adjustment to also work with ID3v1-tags, which may at worst slow it down by factor 2.

You can use eyed3. First, from a terminal, install:

sudo apt-get install eyed3

Then, run:

eyeD3 song.mp3

Combine that with grep to get specific tags in one line.

eyeD3 song.mp3 | grep artist

(to strip all mp3 tags, see HERE)

I prefer to use id3v2, just type id3v2 -l somefile.mp3.
You can also see the id3v2 man page for more specific use.

You can try exiftool(Read and write meta information in files).

"ExifTool is a platform-independent Perl library plus a command-line application for reading, writing and editing meta information in a wide variety of files. ExifTool supports many different metadata formats including EXIF, GPS, IPTC, XMP, JFIF, GeoTIFF, ICC Profile, Photoshop IRB, FlashPix, AFCP and ID3, as well as the maker notes of many digital cameras by Canon, Casio, FLIR, FujiFilm, GE, HP, JVC/Victor, Kodak, Leaf, Minolta/Konica-Minolta, Motorola, Nikon, Nintendo, Olympus/Epson, Panasonic/Leica, Pentax/Asahi, Phase One, Reconyx, Ricoh, Samsung, Sanyo, Sigma/Foveon and Sony." - ExifTool by Phil Harvey

Here is an example of the command:

exiftool test.mp3 
ExifTool Version Number : 10.00
File Name : test.mp3
Directory : .
File Size : 8.2 MB
File Modification Date/Time : 2016:03:02 21:44:58+01:00
File Access Date/Time : 2016:04:06 21:34:01+02:00
File Inode Change Date/Time : 2016:03:02 21:45:36+01:00
File Permissions : rw-rw-r--
File Type : MP3
File Type Extension : mp3
MIME Type : audio/mpeg
MPEG Audio Version : 1
Audio Layer : 3
Sample Rate : 44100
Channel Mode : Stereo
MS Stereo : Off
Intensity Stereo : Off
Copyright Flag : False
Original Media : False
Emphasis : None
VBR Frames : 9544
VBR Bytes : 8467680
ID3 Size : 115419
Band : Tech N9ne Collabos
Album : Strangeulation (Deluxe Edition)
Composer : Tech N9ne Collabos
Genre : Rap & Hip-Hop
Copyright : 2014 Strange Music, Inc
Title : American Horror Story (feat. Ces Cru)
Artist : Tech N9ne Collabos
Track : 10
Year : 2014
Comment : 
Lyrics : 
Private : (Binary data 8192 bytes, use -b option to extract)
Picture MIME Type : image/jpeg
Picture Type : Front Cover
Picture Description : 
Picture : (Binary data 104371 bytes, use -b option to extract)
Audio Bitrate : 272 kbps
Date/Time Original : 2014
Duration : 0:04:09 (approx)

Check out lltag if you are looking for a solution which supports more than just mp3/ID3.

Install it with:

sudo apt-get install lltag

to view all tags with it: (-S is for show)

lltag -S somefile.mp3

to view certain tags with it:

lltag --show-tags artist,album,title,number somefile.mp3

Beets

You can start with this screencast and the Getting started guide

Install either:

pip install beets # latest version
apt install beets # repo version

Also:

• To just read the metadata: exiftool -v3 *.mp3
  


• 
  mid3v2 from (python-mutagen package) (instead of id3v2, last update was on 2013!)


• 
  id3 - Editor for ID3 tags (not the same as this id3)


• 
  id3tool - Command line editor for id3 tags


• 
  id3ren - id3 tagger and renamer