SQL Database layout/design

I'm creating a music player that is backed by a SQLite database. There's a songs table that has an id, title, artist, album, etc. I'm currently trying to make playlists and I'd like to know whether my design will be efficient. Initially I wanted to make a table of playlists and each playlist entry would have a list of song ids. I would then query the songs table for the list of song ids. Something along the lines of SELECT * FROM songs where id=this OR id=that OR id=..... However, I've just read up on joins so now I'm thinking that each playlist should be its own table and entries for a playlist table would just be ids from the songs table and I can do an inner join on the song id column between a specific playlist table and the songs table. Which method would be more efficient? Are they equivalent?