If you have an instrumental track ready and are only missing vocals to go with it, I can provide them! They'll be recorded with an USB cardioid microphone, and you can easily ask me to put them together with your instrumental track as well (check out my audio editing service!). My vocal range is alto, which is the lowest range for female voices you can find (well suited for sultry jazz standards, for example), but I have a pretty versatile voice. Feel free to ask me if I can provide my services for a specific project you have in mind. The $15 price is for a recording with a duration up to 4 minutes, but we can discuss custom pricing for a longer project.