I had a similar experience as Andrew did with the gift of tongues. I kept trying to speak in them just like Andrew, I had the same exact problem Andrew had. I was thinking that God would takeover my mouth and they would just come out. It doesn’t work that way. God showed me I had a demon of fear that kept me from speaking in tongues. I had to just start saying words I didn’t know. It was really hard to get that thru my head, especially since I had the experience of being given a new song that I had never known. I just started singing that and I thought tongues would be the same way as the new song, but tongues wasn’t. I had to say the tongues by faith. So it was literally me saying the tongues just like Andrew teaches. I don’t think everyone has the gift of tongues tough too.