LG G3 :: Music Player Does Not Allow To Select Bluetooth As Transfer Option

I have had an LG Nexus 4 for about 2 years, and I remember transferring music from my old Samsung S2 to the Nexus 4 was a breeze (was able to move 1,200 songs in a few minutes by Bluetooth). Today I purchased an LG G3 and now I want to move the music from the Nexus 4 to the G3. I cannot figure out a quick and easy way to so this.... the music player on the Nexus 4 does not allow me to select Bluetooth as a transfer option. I also tried installing the LG Cloud.... I can get songs to go to the cloud, but only 1 song at a time (this will take forever and makes no sense at all). There has to be a simpler, more efficient way to transfer music from 1 phone to the other....