Use APKPure App
Get Fast Mp3 Cutter and Joiner old version APK for Android
Simple tool for cutting and merging Mp3 files.
Simple and easy to use tool for trimming and joining Mp3 files.
You can set audio bitrate, audio sampling rate and audio channel, while merging mp3 files.
You will find your converted files in the "Music Folder" (i.e /SdCard/Music/)
***This app uses FFMPEG library.