S.S. Coachella (Dec 16-19, Dec 19-23) Reflecting a growing trend of youth-focused music cruises, Coachella will introduce the S.S. Coachella in December, with two trips through the Caribbean featuring Pulp, Hot Chip, Girl Talk, Yeasayer, Sleigh Bells, James Murphy of LCD Soundsystem and about 15 other acts. … Goldenvoice, the Los Angeles concert promoter behind…