Tired of guitarists taking all the lead! Bass can solo over some blues and sound good too. Here is a backing track I made. All you have to know for lead here is feel it, and play notes in D major.
If you want you can download an app called Spire. It will give you the option to open in Spire (link below). You can actually add your own track and play right to it and record a track right from your phone mic. Just use headphones for monitoring so it doesn’t record the backing track too. Be fun to hear what you all come up with!
Does it let you record from your phone mic? Spire is cool because it has an auto EQ function. So you play, hit that button and it will adjust the mic so the recording doesn’t clip.
I guess if you can’t use spire, you can import or download the track and find a way around it, for those who want to give it a go and share. If not, it’s good practice to just play over as a backing track.
For those without equipment, lots of amps tend to have a Aux cable on them. You could plug into it and play the track over the Aux cable, and record on another recording app. Just look in google store (for android users) and search for recording app.