I've had several acquaintances tell me they used a Mac computer and garage band to make their own music over the years. I'm on disability, so I can't afford a new computer though. I'd like to help my mom out with accompaniment music for things she wants to sing in church. I'm hoping I could get older Mac computer/notebook equipment that would allow me to lay down a keyboard track, a guitar track and mix that with a vocal track using garage band. I managed to get a tax refund this year, but it only leaves me with $700 to get both a computer and a keyboard that will hook into it in some fashion. (Every Windows PC I've ever purchased hasn't had the motherboard capability to accept a midi input). I'd like to be able to use some composing software that would write the sheet music based on input from a keyboard. Can anyone recommend some older Mac computers that can handle these composing/recording tasks? I also need to find a compatible keyboard (preferably a full keyboard) for composing. What are the mimimum RAM/Processor speed requirements I would need? Are there any USB considerations I need to know about in regards to hooking up the keyboard and mic? Many thanks to anyone who can offer assistance.