Joe Satriani's "Summer Song" faces off against Bob Seger's "Night Moves" in the second round of our Greatest Summer Song battle – and your votes determine the winner.

We began this competition with 32 of classic rock’s best summertime songs. The field is already down to 16, and will be cut in half again and again each of the next four weeks by your votes, until we arrive at the greatest summer song of all time.

Seger's nostalgic tale of a pair of lovers "trying to lose those awkward teenage blues" in the summer of 1962 rather handily defeated Aerosmith's "Permanent Vacation" in the first round, while Joe Satriani's 1992 gem "Summer Song" edged out Kid Rock's Lynyrd Skynyrd and Warren Zevon-sampling "All Summer Long" in its first battle.

But which one of them will move on? That's up to you. You can vote once per hour in each of the eight second-round battles until voting closes on Aug. 3 at 11:59PM ET. Your choice for the Greatest Summer Song of all time will be revealed on Aug. 25, 2015.

Hear Joe Satriani Perform 'Summer Song'

Hear Bob Seger Performs 'Night Moves'

See Bob Seger and Other Rockers in the Top 100 Albums of the '80s