OnSIP’s enhanced music on hold allows each user to select their own hold music, so each caller gets different tunes depending on who put them on hold or which menu they came in through. (You can even change your hold music for the holidays or for a special event!) You can also record a customized hold message to engage your callers while they’re waiting on the line. This presents a great opportunity to advertise additional features of your business or inform your audience of a special sale or promotion.
Voice over Internet Protocol, similar to cellular networks, is handled digitally. Ringback is one way in which VoIP is setting itself apart from traditional telephony services. When you subscribe to business VoIP, your phone will most likely come pre-programmed with both ringback and on-hold music. VoIP providers, unlike cell phone carriers, don’t charge extra for ringback tones. Not only that, you can upload your own custom ringback and on-hold music, such as a favorite song, a customized soundtrack, or even a customized greeting or up-sell message. VoIP subscribers can select different connect and on-hold music by accessing their online portal.

Hold music / on hold music for your business. This is a sample of a 3 minute long music on hold loop with generic recorded voice messages, designed to suit a
source: I have a android with version 2.3.6 is it possible or is there a app to play music to the calling person when you place a call on hold? francos Level 1 (Contributor) lissa.meeker Level 1 (Contributor) "But you can not just play music if your on the phone...."