The Battle Host must provide a sample set to be used for the battle. These samples are the only sound sources allowed, unless the Additional Rules for the battle state otherwise. The samples can be anything that the Battle Host has the right to distribute for non-commercial use.
The Battle Host must create three Additional Rules. These can allow or require additional sound sources, or impose any kind of new requirements.
Anyone can enter the Battle by posting a link to their entry in the Battle thread. Unless the Additional Rules state otherwise, any processing is allowed and the source samples need not be recognizable. The Host may disqualify any entry that does not meet either the general rules or the additional ones.
Once the submission deadline is reached, the winner is elected by posting votes in the same thread. Anyone is welcome to vote whether they participated or not. In case of a draw, the Host designates the winner between the submissions tied for first place.
Each battle takes place over two weeks, starting on a Friday. Submissions close and votes open at 23:59 on the 11th day (tuesday). Voting closes at 23:59 on the 13th day (thursday). The winner then becomes the Host, and has until 23:59 on the 14th day (friday) to post a new thread with a new sample set and new rules.
Five notes over a bar in 4/4 is a quarter note quintuplet - 5 notes in the time of 4 quarter notes
It also works the other way around: 3 in the time of 4, 5 in the time of 6, 7 in the time of 8 etc). So three notes a bar in 4/4 can be half note triplets (3:2) or quarter note triplets (3:4). 7 notes a bar in 4/4 is usually notated as eighth note septuplets (7:8) etc.
You'd have to play them at different tempos so the lengths match but yeah. Unless you resample your 7/8 pattern and timestretch it I guess.
DAWs should really free themselves of the limited notation system and allow any arbitrary division of the bar. That said, fitting 7 equal notes in a piano roll bar with the grid off is not THAT hard and it will be a lot more flexible than those other options.