Porting apps from the smaller iPhone to the iPad platform usually means you get a few more features, but in the case of iSequence HD, you get a whole different interface. A 130MB download for the very reasonable price of £2.99, this is a surprisingly capable sequencing package with tools and features that you don't often see in iOS music apps, even in Apple's own GarageBand. It also seems to have received relatively little attention which is odd given that it's really rather good.
iSequence HD is based around an eight track step sequencer that you can play using the onscreen keys, easily scrolled up and down six octaves. For beats you get a set of drum pads and although playing notes on a screen is never exactly an organic experience, you do get a velocity control slider as well as glissando and mono / poly controls to make things more pleasurable. Set a tempo and activate the metronome and you're able to record into the grid, with notes appearing colour coded complete with the note name, which is a nice touch. They can be copied, pasted moved and transposed easily and you can select multiple notes as well.
The sequencer makes it easy to see what notes have been recorded as well as editing them by touch.
It's all about sound
There are 165 built-in sounds and they are really very good, ranging from gritty urban drum patches to stabs, leads, pads and fat basses. Better, dare I say, than many similar apps. In the sound browser you can easily preview sounds before loading them, and if you choose to edit a sound you're taken to the wave editor section. Here you get to control different layers of samples in a patch, set up looping and the ADSR envelope of a sound. Even better, you can import your own samples by either transferring them over wi-fi, from iTunes, or recording them directly into the app using a microphone. So building your own beatbox kit or recording vocal loops for example would be easy.
Choose from the great built-in sounds, add more via in-app purchases or import or record your own with ease.
a programmer's guide
Programming patterns is easy and these can be chained together to make songs. Another nice touch is the ability to automate multiple parameters using a smooth curve system, drawn with your finger. Go into the mixer section and you have eight channel strips and each one is assignable through one of five effect slots. Globally there are ten types of effect, each with controls. Some, like reverb, can only be used in one slot at once due to power requirements. Nonetheless it's a really flexible system and helps to add depth and interest to tracks.
The mixer is easy to use and lets you access global effects as well as project BPM and master volume with limiting.
Recording and Export options
To aid you in your recording, there's a 'slow down'