What are you guys doing for music? I am part way through creating a gigantic spotify playlist that I will keep on my phone. For those curious, spotify has a 10,000 song limit in playlists. That's TONS of room. At this point, I am adding the discography of most artists I like, and then trimming out live versions and duplicates, and songs I don't like all that much. I find it easier to add them en mass then remove the singles I don't want. For a few bands/artists, I have added only the songs I like. I'm up to 106 hours (1500 songs) so far.
Since battery charge is most likely to be asked: I have an android phone, and I figure with a few tweaks, the battery can last for quite a while (aside from just using airplane mode). Listening to music usually isn't a huge drain in itself. I am also carrying a 10,000 mAH Anker charger for when I am between towns.
I figure the trail will be a good place to catch up on albums I haven't listened to but have been meaning to