I have been a fan of pos-beatles individual members songs
And in Paul Maccartney No More Loney Night's lyris I found this:
1 -"I can wait another day until I call you You've only got my heart on a string and everything a-flutter But another lonely night might take forever....."
what is the roe of "a-" in "a-flutter"???
And in George Harrison Blow Away's lyrics I found this:
2 - "Wind blew in, cloud was dispersed Rainbows appearing, the pressures were burst Breezes a-singing, now feeling good The moment had passed like I knew that it should"
what is the role of "a-" in "a-singing"????