There are different ways to transfer music from your computer to your iPhone. One way is to use iTunes, which is a free media player and device management software developed by Apple. To transfer music using iTunes, you will need to connect your iPhone to your computer using a USB cable and select your iPhone device from the iTunes menu. Then, you can select the music you want to transfer to your iPhone, and sync it to your device. Another way to transfer music is to use cloud storage services like iCloud, Dropbox, or Google Drive. With these services, you can upload your music to the cloud from your computer and then download it to your iPhone using the appropriate app. Additionally, there are third-party software and apps that allow you to transfer music from your computer to your iPhone wirelessly or using Wi-Fi. Some popular options include AnyTrans, iMazing, and AirDrop.