Tongues is a heavenly language that we use to communicate in the spirit, When you speak in tongues you are actually speaking the language of another race or person that is existing on earth, Act 2: 7-8 says.
And they were all amazed and marveled, saying to one another, Behold are not all these which speak Galilaeans ?.
And how hear we every man in our own tongue,wherein we were born ?.
When the Holy Spirit came upon them, they began to speak in tongues, they began to spoke in a language that was not there own and the people who owm and understand the language were the ones, who labelled them as speaking in tongues because they spoke a language which was not there's and which on a normal day they would not speak but for the intervention of the Holy Spirit.
Today, alot of preachers world wide said that interpretation do not exist and if u cannot say it with them, then u will tagged as lacking in the spirit, this kind of speaking in tongues is not correct,it should not practised dy true believers of christ.
Tongues come from the inspiration or interpretation of the Holy Ghost,u cannot force yourself to speak in tongues as a true believer of Christ.
Remain Blessed !