I pre-ordered the Coldplay Ghost Stories album. I was charged $1.38 for 2 songs since Midnight and Magic are already available. Will I be charged the whole $5.99 by the time the whole album is available on May?

I pre-ordered the Coldplay Ghost Stories album. I was charged $1.38 for 2 songs since Midnight and Magic are already available. Will I be charged the whole $5.99 by the time the whole album is available on May? Question might be lame, but it's the first time that I pre-ordered an album, and I just got confused with the charges. Thanks!