With samples arranged into Construction Kits, Bass House - MIDI Chords & Progressions includes Bass, Chords, Synth, Leads and Full Mixes. Tempos are 123BPM, 125BPM and 127BPM - but the MIDI files can be easily synced to any Tempo or Key.
For more info, free samples and demos check out their website at:
http://www.futureloops.com/product-bass ... ssions.php