If you have the 2010, 1st gen iPad that iPad model maxes out at iOS 5.1.1 and NOT iOS 6.
That iPad is too old now and there are NO more compatible apps for an over 10-year old iPad, any longer.
Third party app developers completely abandoned this iPad model in late 2015 into 2016.
The ONLY way to get music into that iPad now is to use a full computer with any version of the iTunes application for Mac or Windows PC installed on it on it to rip/convert audio/music CDs through iTunes to mp3 format or one of Apple's own audio formats and connect that iPad to the computer and sync the ripped and saved music in iTunes to that iPad.
You will need a Mac or Windows PC with an internal or external optical disc reader/burner to be able to read and convert audio/music CDs
That is the ONLY way to put music inside of that iPad, now.
Same to get other data into that very old iPad, now.
Use iTunes to sync your iPhone, iPad, or iPod with your computer - Apple Support
Best of Luck to You!