I just moved on from one band and was quickly picked up by another band. This band has some very good musicians in it. They have gigs booked to play out and their current bassist is a drunk and unemployed and very unreliable. So they brought me in to replace him. Any way they have these gigs booked (next 3 weekends) I'm trying with my limited time to practice (I work a job for a living) the songs and get up to speed. I can tell there seems to be some pressure on me to get these songs down so they can eliminate the current bassist completely. The band plays all originals and has 9 songs. What is the best way to quickly get up to speed? They gave me recordings of music but with no lyrics or vocal tracks laid. I'm figuring 2 months before I'm fully comfortable to know the songs inside and out. Right now every day I just run through the songs and force myself to remember the notes and changes. What do you think? Any advice?