Ok so someone I know makes a lot of music. She uses a MacBook Air, has a usb mic, a novation lounchpad, and has a XLR keyboard. I know there are some external sound cards or mixers or something , but I really don’t know much. All I know is that she doesn’t have one. So I was wondering if there is a gift under 100 that could help link things up or make making music easier. Oh, and she does a TON of composing with Sibelius . Thanks! Also, I should add that she has some pretty nice headphones, but I don’t think they are analog. Probably digital.