Ive made a /bug of this about 8 months ago, and then again about a month or two ago, and havnt seen it fixed yet, so I guess a post is in order. March to Strife offers a 4.0 percussion mod. This applies to dots very well, increasing the damage accordingly. For other songs though, it offers a -effect. EXAMPLE, not actual numbers; No Mod - Elemental Chorus +40 FR/MR/CR 2.5 Mod - Elemental Chorus +100 FR/MR/CR 4.0 Mod (March to Strife) - Elemental Chorus +20 FR/MR/CR Im not sure how this effects other songs like Occlusion of Sound or other non DoT songs, but these are my findings.