Step by step video tutorial to transfer music from computer to iPhone 6S / 6S Plus by FoneTrans.
FoneTrans for Windows: http://www.all-iphone-data-recovery.com/fonetrans
FoneTrans for Mac: http://www.all-iphone-data-recovery.com/fonetrans-mac
Key Features of FoneTrans:
1.Transfer between iOS device and PC
FoneTrans can helps users transfer video, music, photo, ringtones and other media files or PDF / EPUB books between computer and iOS device. As for the unsupported video/audio files, it can convert them to iPhone/iPad/iPod compatible formats before transferring. It can also export iOS files to computer/iTunes for backup. And import / export contacts between VCF files (vCard files) / CSV and iPhone 6S / 6S Plus / 6S /5.
2.Share files between iPhone/iPod/iPad and iTunes
Users can also transfer files including music, playlists, movie, picture, TV show, Podcast, iTunes U, eBook, camera roll, ringtone, SMS(MMS) between any two iOS devices(iPhone, iPod and iPad) or iTunes.