Download an mp3 with an embedded thumbnail image:

youtube-dl -x --audio-format mp3 --embed-thumbnail ''

Trim the beginning:

ffmpeg -i original.mp3 -ss 6s -c copy -map_metadata 0 trimmed.mp3

Trim the end:

ffmpeg -i original.mp3 -to 1:27 -c copy trimmed.mp3

Copy the thumbnail back if ffmpeg doesn’t preserve it:

ffmpeg -i original.mp3 -an -vcodec copy cover.jpg
ffmpeg -i trimmed.mp3 -i cover.jpg -map 0:0 -map 1:0 -c copy -id3v2_version 3 -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" updated_target.mp3