When I select the songs from my music library. It then shows only the delete option, not any option for sharing. It shows when I select multiple pictures from my photo album(also able to send multiple pictures via bluetooth.)
There is no way to send your "musics" to another phone via Bluetooth. (yet)
open bluetooth and open music player and select the song (please select the longpress and select it) after long press you will get 3 options 1.delete 2.share 3.onedrive now select share and it will give option via bluetooth now you can send your songs
Go to "Files" app. Select all the songs. Press share..Bluetooth and select device.. send
There is no way to share multiple songs at a time. (To share a single song, long-press and select "share"). You can vote for this feature request if you would like to see this implemented in the future.