This one from HP would be my choice, just because i like HP. It has a decent processor to keep up with music editing and basic multi-tasking. Graphics chip is upgradable for a price, if that's a concern.
http://www.shopping.hp.com/en_US/ho...?HP-ENVY-dv6t-7200-Select-Edition-Notebook-PC
3.1 GHz processor, 8GB RAM, 750 GB HDD, discount on a 9-cell battery, 15.6" screen, starting at $649
Then this from Dell, which, contrary to their reputation, makes a pretty decent laptop.
http://www.dell.com/content/product...ron-17r-5720?c=us&cs=19&l=en&s=corp&~lt=popup
17.3" screen, 3.2 GHz processor, 8GB RAM, 1TB HDD, only a 6-cell battery, decent Nvidia graphics chip, starting at $799
Personally I wouldn't go with any other brand, but if you want to shop around, you could also try:
Samsung
Sony
Toshiba
Asus
Don't go with:
Acer
Lenovo
Anything else
Apple is ridiculously expensive for no reason, but that's your call.
Hope this helps